# United Kingdom Bithynia opercula Amino Acid Racemization Data #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #----------------------------------------------------------------------- # # NOTE: Please cite Publication, and Online_Resource and date accessed when using these data. # If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed. # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/20084 # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/aar/penkman2011uk/penkman2011uk.txt # # Original_Source_URL: # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Other Collections # # Parameter_Keywords: #-------------------- # Contribution_Date # Date: 2016-04-22 #-------------------- # Title # Study_Name: United Kingdom Bithynia opercula Amino Acid Racemization Data #-------------------- # Investigators # Investigators: Penkman, K.E.H.; Preece, R.C.; Bridgland, D.R.; Keen, D.H.; Meijer, T.; Parfitt, S.A.; White, T.S.; Collins, M.J. #-------------------- # Description_and_Notes # Description: Amino acid racemization data on Bithynia opercula samples from a variety of sites in the British Isles and selected northern European stratotypes. # D/L data for aspartic acid, glutamic acid, serine, alanine and valine, and [Ser]/[Ala] in Bithynia opercula. #-------------------- # Publication # Authors: Kirsty E. H. Penkman, Richard C. Preece, David R. Bridgland, David H. Keen, Tom Meijer, Simon A. Parfitt, Tom S. White, Matthew J. Collins # Published_Date_or_Year: 2011-08-25 # Published_Title: A chronological framework for the British Quaternary based on Bithynia opercula # Journal_Name: Nature # Volume: 476 # Edition: # Issue: # Pages: 446-449 # Report_Number: # DOI: 10.1038/nature10305 # Online_Resource: http://www.nature.com/nature/journal/v476/n7361/full/nature10305.html # Full_Citation: # Abstract: Marine and ice-core records show that the Earth has experienced a succession of glacials and interglacials during the Quaternary (last ~2.6 million years), although it is often difficult to correlate fragmentary terrestrial records with specific cycles. Aminostratigraphy is a method potentially able to link terrestrial sequences to the marine isotope stages (MIS) of the deep-sea record. We have used new methods of extraction and analysis of amino acids, preserved within the calcitic opercula of the freshwater gastropod Bithynia, to provide the most comprehensive data set for the British Pleistocene based on a single dating technique. A total of 470 opercula from 74 sites spanning the entire Quaternary are ranked in order of relative age based on the extent of protein degradation, using aspartic acid/asparagine (Asx), glutamic acid/glutamine (Glx), serine (Ser), alanine (Ala) and valine (Val). This new aminostratigraphy is consistent with the stratigraphical relationships of stratotypes, sites with independent geochronology, biostratigraphy and terrace stratigraphy. The method corroborates the existence of four interglacial stages between the Anglian (MIS 12) and the Holocene in the terrestrial succession. It establishes human occupation of Britain in most interglacial stages after MIS 15, but supports the notion of human absence during the Last Interglacial (MIS 5e). Suspicions that the treeless 'optimum of the Upton Warren interstadial' at Isleworth pre-dates MIS 3 are confirmed. This new aminostratigraphy provides a robust framework against which climatic, biostratigraphical and archaeological models can be tested. #------------------ # Publication # Authors: Kirsty E.H. Penkman, Richard C. Preece, David R. Bridgland, David H. Keen, Tom Meijer, Simon A. Parfitt, Tom S. White, Matthew J. Collins # Published_Date_or_Year: 2013-02-01 # Published_Title: An aminostratigraphy for the British Quaternary based on Bithynia opercula # Journal_Name: Quaternary Science Reviews # Volume: 61 # Edition: # Issue: # Pages: 111-134 # Report_Number: # DOI: 10.1016/j.quascirev.2012.10.046 # Online_Resource: http://www.sciencedirect.com/science/article/pii/S0277379112004520 # Full_Citation: # Abstract: Aminostratigraphies of Quaternary non-marine deposits in Europe have been previously based on the racemization of a single amino acid in aragonitic shells from land and freshwater molluscs. The value of analysing multiple amino acids from the opercula of the freshwater gastropod Bithynia, which are composed of calcite, has been demonstrated. The protocol used for the isolation of intra-crystalline proteins from shells has been applied to these calcitic opercula, which have been shown to more closely approximate a closed system for indigenous protein residues. Original amino acids are even preserved in bithyniid opercula from the Eocene, showing persistence of indigenous organics for over 30 million years. Geochronological data from opercula are superior to those from shells in two respects: first, in showing less natural variability, and second, in the far better preservation of the intra-crystalline proteins, possibly resulting from the greater stability of calcite. These features allow greater temporal resolution and an extension of the dating range beyond the early Middle Pleistocene. Here we provide full details of the analyses for 480 samples from 100 horizons (75 sites), ranging from Late Pliocene to modern. These show that the dating technique is applicable to the entire Quaternary. Data are provided from all the stratotypes from British stages to have yielded opercula, which are shown to be clearly separable using this revised method. Further checks on the data are provided by reference to other type-sites for different stages (including some not formally defined). Additional tests are provided by sites with independent geochronology, or which can be associated with a terrace stratigraphy or biostratigraphy. This new aminostratigraphy for the non-marine Quaternary deposits of southern Britain provides a framework for understanding the regional geological and archaeological record. Comparison with reference to sites yielding independent geochronology, in combination with other lines of evidence, allows tentative correlation with the marine oxygen isotope record. #------------------ # Funding_Agency # Funding_Agency_Name: English Heritage # Grant: #------------------ # Funding_Agency # Funding_Agency_Name: NERC # Grant: #------------------ # Funding_Agency # Funding_Agency_Name: Wellcome Trust # Grant: GR076905MA #------------------ # Funding_Agency # Funding_Agency_Name: Leverhulme Trust # Grant: #------------------ # Site_Information # Site_Name: UKAAR # Location: Europe>Northern Europe>British Isles # Country: United Kingdom # Northernmost_Latitude: 54.0 # Southernmost_Latitude: 50.0 # Easternmost_Longitude: 7.0 # Westernmost_Longitude: -3.0 # Elevation: m #------------------ # Data_Collection # Collection_Name: Penkman2011AAR # Earliest_Year: 2800000 # Most_Recent_Year: 0 # Time_Unit: Cal. year BP # Core_Length: m # Notes: #------------------ Lab: NEaar (University of York) Lab PI: Penkman, K.E.H. Preparation date: 2002 to 2011 Pretreatment: repeated sonication in MilliQ H2O, powdered and bleached 48 hours AA fraction = AMINO FRACTION: FAA = free amino acids; THAA = total hydrolysable amino acids Hydrolysis procedure: 24 hr at 110°C in 10 µL/mg of 7 M HCl under N2 Bleach: Yes Analytical method: RPLC Instrumental programming: Concentration is based on internal calibration with L-hArg Area or height ratio: Area Blank corrections: none Response factors: lab standard Data screening criteria: Rejection criteria: no samples rejected for reporting. samples rejected for calculation of means indicated in data table. Collector: various Summary: Extent of amino acid racemization (D/L) for aspartic acid (Asx), glutamic acid (Glx), serine (Ser), alanine (Ala), valine (Val) and [Ser]/[Ala] in Bithynia opercula from British sites FAA = free amino acid fraction THAA = total hydrolysable amino acid fraction Bithynia species Site No. ind. analysed FAA Asx D/L x FAA Glx D/L x FAA Ser D/L x FAA Ala D/L x FAA Val D/L x FAA [Ser]/[Ala] x FAA Asx D/L σ FAA Glx D/L σ FAA Ser D/L σ FAA Ala D/L σ FAA Val D/L σ FAA [Ser]/[Ala] σ THAA Asx D/L x THAA Glx D/L x THAA Ser D/L x THAA Ala D/L x THAA Val D/L x THAA [Ser]/[Ala] x THAA Asx D/L σ THAA Glx D/L σ THAA Ser D/L σ THAA Ala D/L σ THAA Val D/L σ THAA [Ser]/[Ala] σ leachii Acle (modern) 3 0.00 0.35 0.00 0.19 0.10 0.05 0.08 0.04 0.02 0.62 0.00 0.00 0.01 0.00 0.00 0.11 tentaculata Acle (modern) 2 0.00 0.00 0.10 0.04 0.08 0.04 0.02 0.84 0.01 0.00 0.02 0.00 0.00 0.01 tentaculata Enfield Lock 4 0.27 0.13 0.42 0.09 0.15 2.28 0.01 0.02 0.01 0.01 0.02 0.33 0.27 0.05 0.24 0.05 0.03 0.90 0.02 0.01 0.01 0.01 0.01 0.07 tentaculata Quidenham Mere, 250-260cm 4 0.27 0.23 0.42 0.08 0.19 2.25 0.01 0.10 0.03 0.01 0.03 0.17 0.25 0.06 0.25 0.05 0.03 0.77 0.01 0.00 0.02 0.01 0.00 0.02 tentaculata Quidenham Mere, 640-650cm 3 0.28 0.28 0.46 0.09 0.22 2.26 0.02 0.02 0.01 0.01 0.02 0.14 0.26 0.06 0.27 0.05 0.03 0.76 0.01 0.00 0.02 0.01 0.00 0.06 tentaculata Newby Wiske 3 0.34 0.10 0.54 0.10 0.14 1.63 0.02 0.01 0.02 0.01 0.02 0.13 0.34 0.06 0.31 0.06 0.04 0.74 0.01 0.00 0.01 0.01 0.00 0.05 tentaculata Aston-upon-Trent 4 0.32 0.16 0.56 0.12 0.19 1.58 0.02 0.03 0.03 0.03 0.04 0.18 0.36 0.07 0.34 0.06 0.04 0.76 0.01 0.00 0.01 0.00 0.00 0.07 tentaculata Star Carr, 245-250cm 2 0.39 0.22 0.57 0.11 0.15 1.91 0.00 0.01 0.01 0.01 0.02 0.19 0.36 0.07 0.33 0.07 0.04 0.81 0.01 0.00 0.00 0.01 0.00 0.08 tentaculata Sproughton 4 0.39 0.12 0.64 0.16 0.12 1.44 0.02 0.01 0.02 0.01 0.03 0.07 0.37 0.08 0.36 0.09 0.05 0.73 0.01 0.00 0.05 0.00 0.00 0.11 tentaculata Star Carr, 524-528cm 3 0.43 0.20 0.63 0.13 0.17 1.38 0.01 0.01 0.03 0.01 0.02 0.07 0.38 0.08 0.37 0.10 0.04 0.65 0.00 0.00 0.01 0.02 0.00 0.04 tentaculata Cassington 4 0.50 0.18 0.82 0.19 0.10 1.09 0.01 0.02 0.01 0.01 0.03 0.09 0.43 0.10 0.51 0.12 0.07 0.67 0.01 0.01 0.02 0.01 0.00 0.07 tentaculata Isleworth 4 0.57 0.20 0.86 0.20 0.13 1.00 0.01 0.01 0.02 0.01 0.01 0.05 0.45 0.11 0.53 0.14 0.07 0.67 0.01 0.01 0.02 0.01 0.01 0.05 tentaculata East Mersea, Restaurant site 2 0.60 0.21 0.90 0.23 0.12 0.75 0.01 0.02 0.00 0.02 0.02 0.09 0.48 0.12 0.46 0.16 0.08 0.62 0.01 0.01 0.04 0.02 0.01 0.01 tentaculata Coston 3 0.62 0.20 0.93 0.24 0.14 0.81 0.02 0.01 0.02 0.01 0.02 0.04 0.51 0.13 0.62 0.17 0.08 0.66 0.01 0.00 0.01 0.00 0.00 0.04 tentaculata Maxey 4 0.60 0.24 0.93 0.25 0.16 0.78 0.05 0.01 0.05 0.03 0.02 0.10 0.49 0.14 0.54 0.17 0.08 0.57 0.04 0.02 0.06 0.03 0.02 0.04 tentaculata Woolpack Farm 1 0.65 0.17 0.93 0.26 0.17 0.57 0.01 0.02 0.00 0.00 0.00 0.00 0.52 0.13 0.59 0.17 0.09 0.51 0.00 0.00 0.00 0.00 0.00 0.00 tentaculata Jaywick Sands 4 0.62 0.23 0.92 0.25 0.14 0.71 0.01 0.03 0.01 0.01 0.01 0.07 0.52 0.15 0.58 0.17 0.09 0.59 0.02 0.01 0.05 0.01 0.01 0.04 tentaculata Saham Toney, 92 4 0.63 0.18 0.92 0.23 0.14 0.67 0.01 0.02 0.01 0.00 0.01 0.04 0.53 0.13 0.61 0.17 0.10 0.57 0.00 0.00 0.02 0.00 0.01 0.03 tentaculata Itteringham 1 0.65 0.21 0.94 0.27 0.15 0.71 0.01 0.00 0.00 0.00 0.00 0.00 0.50 0.13 0.56 0.18 0.09 0.60 0.01 0.00 0.02 0.00 0.01 0.00 tentaculata Tattershall Castle 4 0.62 0.20 0.94 0.24 0.17 0.73 0.02 0.00 0.01 0.01 0.01 0.05 0.53 0.14 0.61 0.18 0.09 0.57 0.01 0.01 0.02 0.01 0.01 0.04 tentaculata Bobbitshole 3 0.64 0.20 0.94 0.24 0.14 0.75 0.01 0.01 0.02 0.01 0.01 0.04 0.52 0.13 0.58 0.18 0.10 0.59 0.01 0.00 0.02 0.01 0.00 0.02 tentaculata Shropham 4 0.64 0.20 0.98 0.27 0.15 0.72 0.01 0.01 0.02 0.01 0.01 0.02 0.53 0.13 0.61 0.18 0.09 0.58 0.01 0.00 0.02 0.01 0.01 0.04 tentaculata Trafalgar Square 6 0.64 0.19 0.93 0.26 0.14 0.70 0.01 0.02 0.03 0.01 0.03 0.03 0.53 0.13 0.62 0.19 0.10 0.52 0.01 0.01 0.01 0.01 0.01 0.04 tentaculata Saham Toney, 94 2 0.66 0.16 1.08 0.25 0.16 0.60 0.01 0.01 0.24 0.01 0.02 0.27 0.54 0.12 0.63 0.19 0.11 0.56 0.01 0.00 0.04 0.00 0.01 0.09 tentaculata Bardon Quarry, Area 3 3 0.63 0.15 0.93 0.26 0.15 0.72 0.01 0.01 0.01 0.01 0.01 0.05 0.52 0.13 0.60 0.19 0.09 0.55 0.01 0.01 0.02 0.02 0.01 0.04 tentaculata Saham Toney, 93 4 0.65 0.19 0.95 0.27 0.16 0.71 0.02 0.01 0.02 0.02 0.01 0.06 0.54 0.13 0.62 0.19 0.10 0.58 0.01 0.00 0.02 0.01 0.01 0.04 tentaculata Itteringham, Bed d 4 0.63 0.14 0.94 0.25 0.16 0.68 0.01 0.00 0.01 0.01 0.01 0.05 0.55 0.13 0.64 0.19 0.10 0.53 0.01 0.00 0.01 0.01 0.00 0.03 tentaculata Eckington 4 0.65 0.20 0.95 0.27 0.16 0.59 0.02 0.01 0.02 0.01 0.01 0.08 0.54 0.15 0.59 0.20 0.10 0.54 0.01 0.00 0.05 0.01 0.01 0.04 tentaculata Cropthorne New Inn 4 0.65 0.21 0.98 0.28 0.16 0.76 0.01 0.03 0.02 0.02 0.01 0.07 0.54 0.15 0.63 0.20 0.09 0.61 0.01 0.00 0.01 0.01 0.00 0.03 tentaculata Bardon Quarry, Area 2 4 0.64 0.18 0.94 0.28 0.17 0.64 0.03 0.04 0.02 0.02 0.02 0.09 0.55 0.15 0.65 0.21 0.11 0.55 0.03 0.03 0.05 0.03 0.02 0.06 tentaculata Funtham's Lane East 25 0.68 0.24 0.97 0.32 0.18 0.55 0.01 0.01 0.02 0.01 0.02 0.04 0.52 0.15 0.62 0.22 0.12 0.51 0.02 0.01 0.06 0.01 0.01 0.04 tentaculata Stanton Harcourt 4 0.66 0.27 0.97 0.31 0.17 0.68 0.01 0.02 0.01 0.01 0.01 0.03 0.56 0.18 0.64 0.23 0.11 0.56 0.01 0.00 0.02 0.01 0.00 0.03 tentaculata Crayford 4 0.68 0.28 0.98 0.32 0.17 0.57 0.01 0.01 0.01 0.01 0.01 0.04 0.58 0.18 0.62 0.24 0.12 0.46 0.01 0.01 0.03 0.00 0.01 0.03 tentaculata Barnwell 2 0.69 0.23 0.99 0.31 0.17 0.54 0.01 0.01 0.01 0.02 0.01 0.01 0.58 0.17 0.65 0.24 0.12 0.47 0.00 0.00 0.02 0.01 0.01 0.01 tentaculata Ailstone-on-Stour 4 0.67 0.28 0.99 0.32 0.18 0.61 0.00 0.02 0.01 0.01 0.01 0.08 0.57 0.19 0.67 0.24 0.12 0.54 0.02 0.02 0.03 0.01 0.01 0.05 tentaculata Histon Road 2 0.67 0.23 1.00 0.33 0.18 0.55 0.01 0.01 0.01 0.00 0.00 0.01 0.57 0.17 0.65 0.24 0.12 0.50 0.00 0.00 0.01 0.01 0.01 0.00 tentaculata Strensham 4 0.68 0.28 1.00 0.34 0.20 0.59 0.01 0.02 0.01 0.01 0.01 0.03 0.54 0.18 0.61 0.25 0.12 0.50 0.01 0.02 0.04 0.02 0.02 0.02 tentaculata Stutton 4 0.67 0.27 0.98 0.31 0.18 0.49 0.01 0.02 0.02 0.01 0.01 0.03 0.59 0.19 0.66 0.25 0.14 0.44 0.01 0.01 0.01 0.01 0.01 0.03 tentaculata Coronation Farm 1 0.68 0.32 0.93 0.34 0.19 0.52 0.00 0.02 0.01 0.01 0.01 0.01 0.55 0.19 0.62 0.25 0.13 0.42 0.00 0.00 0.01 0.00 0.00 0.05 tentaculata Somersham 4 0.69 0.24 0.99 0.33 0.17 0.52 0.02 0.03 0.02 0.02 0.01 0.03 0.59 0.18 0.67 0.25 0.12 0.44 0.01 0.01 0.02 0.01 0.00 0.02 tentaculata Norton Bottoms 15 0.68 0.26 0.95 0.34 0.19 0.49 0.01 0.03 0.06 0.01 0.01 0.05 0.55 0.19 0.63 0.25 0.13 0.45 0.02 0.01 0.04 0.01 0.01 0.06 tentaculata Block Fen 4 0.72 0.23 1.00 0.34 0.20 0.49 0.01 0.01 0.02 0.01 0.01 0.02 0.55 0.17 0.63 0.25 0.13 0.45 0.02 0.01 0.03 0.02 0.01 0.02 troschelii Somersham 4 0.72 0.26 0.97 0.31 0.17 0.36 0.01 0.02 0.03 0.01 0.02 0.01 0.63 0.19 0.74 0.26 0.13 0.31 0.01 0.01 0.02 0.01 0.01 0.01 tentaculata Ebbsfleet, U. Loam, U. part 1 0.68 0.24 0.98 0.32 0.19 0.60 0.00 0.00 0.01 0.00 0.01 0.01 0.59 0.20 0.67 0.26 0.14 0.50 0.00 0.00 0.02 0.01 0.00 0.00 tentaculata Ebbsfleet, U. loam, L. part 2 0.69 0.27 0.99 0.32 0.19 0.56 0.00 0.02 0.02 0.01 0.01 0.06 0.61 0.20 0.73 0.26 0.14 0.49 0.01 0.01 0.02 0.01 0.01 0.03 tentaculata Brough 6 0.69 0.24 0.99 0.32 0.20 0.50 0.01 0.01 0.01 0.01 0.01 0.01 0.60 0.21 0.72 0.27 0.16 0.47 0.01 0.00 0.04 0.01 0.01 0.04 tentaculata Ilford 2 0.70 0.32 0.98 0.36 0.19 0.45 0.01 0.00 0.02 0.01 0.01 0.04 0.60 0.22 0.66 0.27 0.14 0.39 0.03 0.01 0.03 0.01 0.02 0.02 tentaculata Maidenhall 2 0.71 0.26 1.00 0.32 0.19 0.49 0.00 0.01 0.02 0.01 0.00 0.01 0.60 0.21 0.69 0.28 0.15 0.43 0.00 0.01 0.01 0.02 0.00 0.01 tentaculata West Thurrock (Lion Pit), sample 4 25 0.71 0.29 0.99 0.36 0.20 0.45 0.02 0.02 0.03 0.01 0.02 0.05 0.62 0.20 0.71 0.29 0.15 0.43 0.02 0.01 0.09 0.01 0.01 0.06 tentaculata West Thurrock (Lion Pit), 2000 3 0.70 0.28 0.94 0.34 0.18 0.52 0.01 0.01 0.06 0.01 0.01 0.03 0.62 0.20 0.76 0.29 0.16 0.49 0.01 0.01 0.02 0.01 0.00 0.03 tentaculata Ebbsfleet, Lowermost Brickearth 3 0.71 0.26 0.99 0.34 0.19 0.43 0.01 0.03 0.01 0.02 0.01 0.02 0.63 0.21 0.77 0.30 0.15 0.40 0.02 0.01 0.04 0.01 0.01 0.01 tentaculata Stoke Tunnel 2 0.71 0.27 0.99 0.34 0.19 0.47 0.01 0.01 0.02 0.01 0.01 0.03 0.61 0.22 0.72 0.30 0.15 0.42 0.00 0.01 0.01 0.01 0.01 0.02 tentaculata West Thurrock (Lion Pit), sample 3 25 0.72 0.27 0.99 0.36 0.20 0.46 0.01 0.02 0.02 0.01 0.02 0.05 0.63 0.21 0.73 0.30 0.16 0.42 0.02 0.01 0.05 0.01 0.02 0.05 tentaculata West Thurrock (Lion Pit), sample 6 5 0.71 0.29 0.98 0.36 0.20 0.47 0.01 0.01 0.01 0.01 0.01 0.04 0.62 0.21 0.74 0.31 0.16 0.44 0.01 0.01 0.03 0.01 0.01 0.04 tentaculata Selsey 3 0.74 0.28 1.01 0.40 0.22 0.39 0.01 0.02 0.01 0.00 0.01 0.04 0.62 0.20 0.66 0.31 0.16 0.40 0.01 0.01 0.02 0.01 0.00 0.01 tentaculata Aveley 4 0.71 0.29 0.96 0.38 0.19 0.42 0.00 0.02 0.02 0.01 0.01 0.02 0.63 0.22 0.71 0.32 0.16 0.39 0.01 0.01 0.02 0.02 0.01 0.02 tentaculata West Wittering 3 0.74 0.30 1.03 0.40 0.21 0.38 0.01 0.01 0.03 0.01 0.01 0.05 0.62 0.22 0.74 0.32 0.16 0.37 0.01 0.01 0.05 0.00 0.00 0.07 tentaculata Bushley Green 1 0.72 0.40 1.01 0.41 0.24 0.40 0.00 0.00 0.01 0.00 0.01 0.01 0.64 0.28 0.68 0.34 0.16 0.37 0.00 0.00 0.00 0.00 0.00 0.01 tentaculata Cudmore Grove 4 0.75 0.25 1.01 0.43 0.23 0.41 0.00 0.01 0.01 0.01 0.01 0.01 0.64 0.22 0.72 0.34 0.19 0.40 0.02 0.01 0.02 0.02 0.01 0.01 tentaculata Hackney Downs 2 0.74 0.27 1.01 0.42 0.24 0.42 0.01 0.00 0.00 0.01 0.01 0.02 0.62 0.21 0.72 0.34 0.17 0.40 0.01 0.00 0.01 0.01 0.01 0.00 tentaculata Cudmore Grove, sample PE 2 0.75 0.29 1.01 0.43 0.26 0.37 0.01 0.02 0.06 0.01 0.01 0.07 0.64 0.26 0.68 0.36 0.20 0.41 0.00 0.01 0.01 0.00 0.00 0.03 tentaculata Belhus Park 1 0.77 0.44 0.90 0.49 0.30 0.25 0.00 0.01 0.04 0.01 0.01 0.05 0.59 0.28 0.55 0.36 0.20 0.23 0.00 0.01 0.13 0.02 0.02 0.20 tentaculata Ebbsfleet, Lower Brickearth 3 0.75 0.33 0.99 0.42 0.24 0.34 0.01 0.03 0.04 0.02 0.01 0.06 0.69 0.29 0.81 0.37 0.21 0.34 0.02 0.01 0.01 0.01 0.01 0.04 tentaculata Purfleet, 1 23 0.75 0.28 1.02 0.45 0.24 0.36 0.01 0.03 0.01 0.01 0.01 0.03 0.66 0.25 0.80 0.38 0.18 0.37 0.01 0.01 0.03 0.01 0.01 0.02 tentaculata Barling 4 0.77 0.37 1.00 0.48 0.30 0.38 0.01 0.01 0.08 0.01 0.02 0.02 0.66 0.27 0.75 0.38 0.20 0.35 0.01 0.01 0.02 0.01 0.01 0.04 tentaculata Purfleet, 6 24 0.76 0.33 0.99 0.48 0.26 0.37 0.01 0.02 0.03 0.01 0.01 0.03 0.64 0.25 0.74 0.38 0.21 0.37 0.01 0.01 0.03 0.01 0.01 0.03 tentaculata Shoeburyness 5 0.77 0.33 0.92 0.49 0.28 0.34 0.01 0.05 0.09 0.01 0.01 0.02 0.64 0.26 0.67 0.39 0.20 0.34 0.01 0.01 0.05 0.01 0.01 0.02 tentaculata Shoeburyness 1 0.77 0.24 1.01 0.48 0.29 0.34 0.00 0.00 0.01 0.00 0.00 0.00 0.64 0.24 0.63 0.37 0.20 0.33 0.00 0.00 0.02 0.00 0.01 0.01 tentaculata Grays 2 0.75 0.29 1.03 0.46 0.24 0.36 0.01 0.04 0.02 0.02 0.04 0.05 0.69 0.25 0.74 0.40 0.20 0.33 0.02 0.01 0.05 0.01 0.00 0.07 tentaculata Marks Tey 2 0.80 0.28 1.03 0.46 0.27 0.26 0.01 0.02 0.03 0.01 0.00 0.01 0.74 0.26 0.84 0.40 0.22 0.24 0.03 0.03 0.09 0.01 0.01 0.01 tentaculata Belhus Park, BP18 4 0.77 0.36 1.04 0.49 0.28 0.31 0.01 0.01 0.02 0.01 0.01 0.01 0.65 0.26 0.72 0.40 0.21 0.30 0.02 0.01 0.03 0.01 0.01 0.02 tentaculata Trimingham 13 0.76 0.28 0.98 0.47 0.29 0.30 0.02 0.03 0.05 0.02 0.02 0.03 0.67 0.25 0.73 0.40 0.22 0.29 0.02 0.01 0.07 0.01 0.01 0.04 tentaculata Hoxne, (2001 (64); Stratum B2) 4 0.76 0.33 1.03 0.46 0.27 0.30 0.01 0.02 0.01 0.03 0.01 0.01 0.69 0.30 0.79 0.40 0.22 0.30 0.01 0.01 0.02 0.02 0.01 0.01 troschelii Barnham, BEF92 3 0.80 0.40 1.04 0.49 0.28 0.22 0.01 0.04 0.03 0.00 0.01 0.01 0.71 0.28 0.71 0.40 0.21 0.23 0.01 0.02 0.03 0.02 0.01 0.01 tentaculata Elveden, ELV 96 2 0.77 0.40 0.95 0.46 0.24 0.24 0.02 0.01 0.13 0.00 0.00 0.02 0.72 0.29 0.87 0.41 0.20 0.22 0.02 0.01 0.08 0.01 0.01 0.01 tentaculata Elveden, ELV 95 5 0.78 0.40 1.03 0.47 0.26 0.24 0.01 0.01 0.03 0.00 0.01 0.01 0.71 0.29 0.80 0.41 0.21 0.24 0.02 0.01 0.05 0.01 0.01 0.01 tentaculata Swanscombe 6 0.76 0.35 0.95 0.49 0.31 0.27 0.01 0.03 0.04 0.02 0.01 0.02 0.66 0.28 0.67 0.42 0.24 0.27 0.02 0.01 0.07 0.01 0.03 0.05 tentaculata Barnham, BEF93 6 0.75 0.36 1.01 0.50 0.27 0.33 0.01 0.03 0.03 0.02 0.02 0.03 0.67 0.29 0.72 0.42 0.20 0.32 0.01 0.00 0.02 0.02 0.02 0.02 tentaculata Woodston 4 0.77 0.40 1.01 0.53 0.30 0.29 0.01 0.01 0.02 0.01 0.01 0.01 0.66 0.30 0.69 0.42 0.23 0.30 0.01 0.01 0.04 0.01 0.01 0.01 tentaculata Hoxne, (2000, Stratum E) 4 0.77 0.38 0.96 0.49 0.28 0.31 0.01 0.02 0.13 0.02 0.01 0.03 0.69 0.29 0.75 0.42 0.23 0.29 0.00 0.01 0.01 0.01 0.01 0.01 tentaculata West Stow (Beeches Pit) 4 0.78 0.37 0.98 0.49 0.27 0.30 0.01 0.01 0.03 0.01 0.01 0.01 0.71 0.31 0.79 0.42 0.25 0.29 0.01 0.01 0.03 0.01 0.01 0.01 troschelii Dierden's Pit 2 0.81 0.38 1.06 0.51 0.27 0.19 0.01 0.02 0.03 0.01 0.01 0.01 0.71 0.28 0.72 0.43 0.22 0.19 0.01 0.01 0.05 0.01 0.01 0.00 tentaculata Hoxne, (2001 (50); Stratum B2) 4 0.76 0.33 0.96 0.48 0.28 0.30 0.01 0.01 0.12 0.03 0.02 0.01 0.69 0.32 0.76 0.43 0.24 0.29 0.01 0.01 0.05 0.01 0.01 0.01 tentaculata Southfleet Road 7 0.78 0.39 1.02 0.52 0.30 0.27 0.01 0.04 0.01 0.01 0.02 0.01 0.68 0.30 0.72 0.43 0.22 0.27 0.02 0.01 0.07 0.01 0.01 0.02 tentaculata Dierden's Pit 4 0.78 0.40 0.84 0.53 0.27 0.23 0.01 0.02 0.18 0.03 0.02 0.04 0.70 0.29 0.73 0.45 0.21 0.26 0.01 0.01 0.02 0.01 0.01 0.02 tentaculata Clacton-on-Sea 4 0.78 0.38 0.98 0.53 0.33 0.28 0.01 0.02 0.08 0.02 0.01 0.02 0.69 0.26 0.70 0.46 0.25 0.30 0.02 0.01 0.10 0.01 0.02 0.01 troschelii Waverley Wood 6 0.81 0.50 1.02 0.57 0.35 0.20 0.01 0.05 0.04 0.00 0.01 0.01 0.70 0.36 0.81 0.48 0.27 0.21 0.04 0.01 0.08 0.03 0.03 0.02 tentaculata Sidestrand, Upper Unio-Bed 7 0.82 0.52 1.04 0.63 0.36 0.19 0.01 0.05 0.04 0.01 0.02 0.01 0.72 0.38 0.67 0.54 0.29 0.23 0.01 0.02 0.14 0.02 0.01 0.03 tentaculata Sidestrand, Lower Unio-Bed 5 0.82 0.50 1.05 0.62 0.35 0.21 0.01 0.06 0.02 0.01 0.01 0.01 0.73 0.37 0.73 0.55 0.29 0.23 0.01 0.01 0.06 0.01 0.01 0.02 troschelii Sugworth 6 0.84 0.53 1.13 0.65 0.39 0.14 0.01 0.02 0.05 0.01 0.02 0.01 0.75 0.37 0.75 0.56 0.28 0.15 0.01 0.01 0.11 0.01 0.01 0.01 troschelii Little Oakley 2 0.87 0.51 1.11 0.65 0.40 0.13 0.00 0.00 0.02 0.01 0.01 0.00 0.76 0.36 0.73 0.56 0.28 0.16 0.00 0.00 0.01 0.00 0.00 0.00 troschelii Pakefield, Unio-Bed 4 0.85 0.51 1.14 0.65 0.36 0.12 0.01 0.03 0.03 0.01 0.01 0.01 0.79 0.38 0.71 0.57 0.30 0.14 0.01 0.03 0.08 0.03 0.01 0.01 troschelii Pakefield, laminated 3 0.84 0.52 1.06 0.64 0.45 0.12 0.01 0.05 0.03 0.02 0.03 0.01 0.77 0.46 0.78 0.58 0.35 0.14 0.01 0.02 0.05 0.01 0.02 0.01 troschelii West Runton 11 0.86 0.52 1.12 0.67 0.40 0.13 0.01 0.01 0.04 0.01 0.01 0.01 0.79 0.39 0.87 0.61 0.33 0.14 0.02 0.02 0.06 0.02 0.01 0.01 bavelensis / tentaculata Bavel 4 0.91 0.67 0.92 0.86 0.64 0.05 0.00 0.09 0.10 0.02 0.02 0.01 0.86 0.63 0.64 0.81 0.54 0.07 0.01 0.01 0.13 0.02 0.04 0.01 troschelii Weybourne Crag 2 0.92 0.74 0.66 0.94 0.78 0.02 0.00 0.03 0.03 0.01 0.01 0.00 0.89 0.70 0.49 0.89 0.69 0.03 0.03 0.02 0.11 0.01 0.03 0.00 troschelii Tegelen 4 0.94 0.82 0.71 0.93 0.83 0.01 0.00 0.11 0.15 0.01 0.01 0.00 0.92 0.81 0.42 0.90 0.75 0.02 0.01 0.02 0.06 0.01 0.03 0.00 tentaculata Weybourne Crag 1 0.94 0.72 0.78 0.95 0.84 0.01 0.01 0.06 0.03 0.01 0.00 0.00 0.88 0.69 0.22 0.92 0.79 0.04 0.00 0.00 0.01 0.00 0.01 0.00 sp. Thorpe Aldringham (Norwich Crag) 1 0.93 0.62 0.52 0.97 0.90 0.01 0.00 0.01 0.09 0.00 0.02 0.00 0.88 0.80 0.29 0.94 0.84 0.03 0.00 0.01 0.00 0.00 0.04 0.00 tentaculata Frechen, Pliocene 4 0.95 0.93 0.41 0.95 0.96 0.01 0.01 0.12 0.18 0.01 0.02 0.00 0.94 0.94 0.28 0.93 0.91 0.02 0.01 0.01 0.11 0.01 0.02 0.01 conica Prospect Quarry (Eocene) 3 0.80 1.00 0.00 0.95 1.07 0.00 0.16 0.02 0.00 0.01 0.03 0.00 0.43 1.00 0.00 0.91 1.05 0.03 0.07 0.01 0.00 0.02 0.02 0.01 Data: Extent of amino acid racemization (D/L) for aspartic acid (Asx), glutamic acid (Glx), serine (Ser), alanine (Ala), valine (Val) and [Ser]/[Ala] in Bithynia opercula from British sites FAA = free amino acid fraction THAA = total hydrolysable amino acid fraction LAB LAB NUMBER SAMPLE NAME COUNTRY SITE NAME PROVENANCE / SAMPLE I.D. UK National Grid Reference Latitude Longitude SAMPLE TYPE GENUS SPECIES n (number of injections) FAA Asx D/L x FAA Asx D/L σ FAA Glx D/L x FAA Glx D/L σ FAA Ser D/L x FAA Ser D/L σ FAA Ala D/L x FAA Ala D/L σ FAA Val D/L x FAA Val D/L σ FAA [S]/[A] x FAA [S]/[A] σ n (number of injections) THAA Asx D/L x THAA Asx D/L σ THAA Glx D/L x THAA Glx D/L σ THAA Ser D/L x THAA Ser D/L σ THAA Ala D/L x THAA Ala D/L σ THAA Val D/L x THAA Val D/L σ THAA [S]/[A] x THAA [S]/[A] σ Additional information NEaar 1209b AMBto1b England Acle, Norfolk 1995 (modern) TG 412101 52º 38' 04.55" 001º 33' 53.99" opercula Bithynia tentaculata 2 0.00 0.00 0.00 0.00 2 0.09 0.01 0.04 0.00 0.09 0.00 0.04 0.00 0.02 0.00 0.84 0.02 NEaar 1000b AMBt1ob England Acle, Norfolk 1995 (modern) TG 412101 52º 38' 04.55" 001º 33' 53.99" opercula Bithynia tentaculata 2 0.00 0.00 0.00 0.00 0.00 0.00 0.46 0.07 2 0.10 0.00 0.05 0.00 0.07 0.00 0.05 0.00 0.02 0.00 0.85 0.00 NEaar 2652b AcBlo1b England Acle, Norfolk TG4/2/01, modern TG 412101 52º 38' 04.55" 001º 33' 53.99" opercula Bithynia leachii 2 0.00 0.00 0.00 0.00 0.21 0.30 2 0.10 0.00 0.05 0.00 0.09 0.01 0.04 0.00 0.01 0.00 0.61 0.23 NEaar 2653b AcBlo2b England Acle, Norfolk TG4/2/01, modern TG 412101 52º 38' 04.55" 001º 33' 53.99" opercula Bithynia leachii 2 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.36 0.08 2 0.10 0.00 0.04 0.00 0.08 0.00 0.04 0.00 0.02 0.00 0.62 0.05 NEaar 2654b AcBlo3b England Acle, Norfolk TG4/2/01, modern TG 412101 52º 38' 04.55" 001º 33' 53.99" opercula Bithynia leachii 2 0.00 0.00 0.00 0.00 0.48 0.10 2 0.10 0.00 0.04 0.00 0.08 0.00 0.04 0.00 0.02 0.00 0.64 0.06 NEaar 2722b ELBto1b England Enfield Lock 3 (10-15cm) TQ 370980 51º 39' 48.94" -000º 01' 08.16" opercula Bithynia tentaculata 2 0.28 0.00 0.15 0.01 0.43 0.00 0.09 0.01 0.16 0.02 2.72 0.04 2 0.28 0.00 0.05 0.00 0.23 0.00 0.04 0.00 0.02 0.00 0.92 0.01 NEaar 2723b ELBto2b England Enfield Lock 3 (10-15cm) TQ 370980 51º 39' 48.94" -000º 01' 08.16" opercula Bithynia tentaculata 2 0.28 0.00 0.15 0.01 0.42 0.00 0.08 0.00 0.12 0.02 2.60 0.00 2 0.29 0.00 0.06 0.00 0.25 0.00 0.06 0.00 0.03 0.00 0.90 0.01 NEaar 2724b ELBto3b England Enfield Lock 3 (10-15cm) TQ 370980 51º 39' 48.94" -000º 01' 08.16" opercula Bithynia tentaculata 2 0.27 0.00 0.12 0.01 0.39 0.00 0.08 0.00 0.15 0.03 2.07 0.01 2 0.28 0.00 0.06 0.00 0.23 0.00 0.06 0.00 0.02 0.00 0.79 0.00 NEaar 2725b ELBto4b England Enfield Lock 3 (10-15cm) TQ 370980 51º 39' 48.94" -000º 01' 08.16" opercula Bithynia tentaculata 2 0.26 0.02 0.15 0.02 0.42 0.00 0.09 0.01 0.16 0.00 1.96 0.05 2 0.24 0.00 0.04 0.00 0.26 0.01 0.04 0.01 0.03 0.01 0.97 0.01 THAA dried out in hydrolysis oven NEaar 2725ib ELBto4ib England Enfield Lock 3 (10-15cm) TQ 370980 51º 39' 48.94" -000º 01' 08.16" opercula Bithynia tentaculata 2 0.26 0.00 0.10 0.02 0.41 0.00 0.08 0.00 0.18 0.00 2.05 0.01 NEaar 2832b QM2Bto1b England Quidenham Mere 2005 core, 250-260cm TM 040875 52º 26' 48.99" 001º 00' 07.86" opercula Bithynia tentaculata 2 0.27 0.01 0.23 0.02 0.43 0.00 0.07 0.00 0.15 0.02 2.33 0.14 2 0.25 0.00 0.06 0.00 0.24 0.00 0.06 0.01 0.02 0.00 0.77 0.02 NEaar 2833b QM2Bto2b England Quidenham Mere 2005 core, 250-260cm TM 040875 52º 26' 48.99" 001º 00' 07.86" opercula Bithynia tentaculata 2 0.27 0.00 0.30 0.01 0.45 0.00 0.08 0.00 0.20 0.02 2.32 0.02 2 0.27 0.00 0.06 0.00 0.27 0.00 0.05 0.00 0.03 0.00 0.80 0.00 NEaar 2834b QM2Bto3b England Quidenham Mere 2005 core, 250-260cm TM 040875 52º 26' 48.99" 001º 00' 07.86" opercula Bithynia tentaculata 2 0.27 0.00 0.26 0.00 0.43 0.00 0.08 0.00 0.20 0.01 2.36 0.04 2 0.26 0.00 0.05 0.00 0.26 0.00 0.05 0.00 0.03 0.01 0.77 0.02 NEaar 2835b QM2Bto4b England Quidenham Mere 2005 core, 250-260cm TM 040875 52º 26' 48.99" 001º 00' 07.86" opercula Bithynia tentaculata 2 0.25 0.01 0.14 0.20 0.38 0.00 0.08 0.01 0.23 2.00 0.07 2 0.24 0.00 0.05 0.00 0.23 0.00 0.05 0.00 0.03 0.00 0.76 0.01 NEaar 2836b QM6Bto1b England Quidenham Mere 2005 core, 640-650cm TM 040875 52º 26' 48.99" 001º 00' 07.86" opercula Bithynia tentaculata 2 0.30 0.00 0.29 0.00 0.47 0.00 0.10 0.00 0.22 0.03 2.25 0.04 2 0.25 0.00 0.06 0.00 0.25 0.00 0.05 0.01 0.02 0.00 0.76 0.06 NEaar 2837b QM6Bto2b England Quidenham Mere 2005 core, 640-650cm TM 040875 52º 26' 48.99" 001º 00' 07.86" opercula Bithynia tentaculata 2 0.26 0.01 0.45 0.00 0.09 0.01 0.23 0.00 2.43 0.02 2 0.25 0.00 0.06 0.00 0.28 0.00 0.05 0.00 0.02 0.00 0.81 0.00 FAA Glx concentration v low NEaar 2838b QM6Bto3b England Quidenham Mere 2005 core, 640-650cm TM 040875 52º 26' 48.99" 001º 00' 07.86" opercula Bithynia tentaculata 2 0.29 0.00 0.26 0.01 0.46 0.00 0.09 0.00 0.22 0.04 2.11 0.05 2 0.27 0.00 0.06 0.00 0.28 0.00 0.07 0.01 0.03 0.00 0.72 0.06 NEaar 3123b SUNWBto1b England Newby Wiske 1 220-230 SE 364878 54º 17' 03.77" -001º 26' 27.01" opercula Bithynia tentaculata 2 0.34 0.00 0.10 0.00 0.52 0.00 0.09 0.00 0.11 0.01 1.50 0.02 2 0.35 0.00 0.06 0.00 0.32 0.00 0.06 0.00 0.04 0.00 0.68 0.01 NEaar 3124b SUNWBto2b England Newby Wiske 1 220-230 SE 364878 54º 17' 03.77" -001º 26' 27.01" opercula Bithynia tentaculata 2 0.36 0.00 0.10 0.01 0.57 0.00 0.10 0.00 0.17 0.01 1.79 0.03 2 0.33 0.00 0.07 0.00 0.31 0.00 0.06 0.00 0.03 0.00 0.75 0.00 NEaar 3125b SUNWBto3b England Newby Wiske 1 220-230 SE 364878 54º 17' 03.77" -001º 26' 27.01" opercula Bithynia tentaculata 2 0.32 0.00 0.09 0.01 0.54 0.01 0.10 0.00 0.15 0.00 1.61 0.00 2 0.33 0.00 0.06 0.00 0.30 0.00 0.07 0.01 0.03 0.00 0.79 0.02 NEaar 4348b AuTBto1b England Aston-upon-Trent ASQ10, 70-80cm SK 430300 52º 51' 55.59" -001º 21' 40.31" opercula Bithynia tentaculata 2 0.34 0.00 0.12 0.05 0.54 0.03 0.13 0.05 0.16 0.03 1.38 0.07 2 0.34 0.00 0.07 0.00 0.33 0.01 0.06 0.01 0.04 0.00 0.75 0.05 NEaar 4349b AuTBto2b England Aston-upon-Trent ASQ10, 70-80cm SK 430300 52º 51' 55.59" -001º 21' 40.31" opercula Bithynia tentaculata 2 0.33 0.00 0.18 0.01 0.56 0.00 0.14 0.03 0.22 0.01 1.66 0.09 2 0.35 0.00 0.07 0.00 0.34 0.00 0.06 0.00 0.04 0.00 0.74 0.04 NEaar 4350b AuTBto3b England Aston-upon-Trent ASQ10, 70-80cm SK 430300 52º 51' 55.59" -001º 21' 40.31" opercula Bithynia tentaculata 2 0.33 0.01 0.19 0.00 0.59 0.00 0.13 0.01 0.22 0.03 1.75 0.19 2 0.37 0.00 0.07 0.00 0.36 0.00 0.07 0.00 0.04 0.00 0.85 0.03 NEaar 4351b AuTBto4b England Aston-upon-Trent ASQ10, 70-80cm SK 430300 52º 51' 55.59" -001º 21' 40.31" opercula Bithynia tentaculata 2 0.29 0.00 0.15 0.01 0.53 0.00 0.10 0.00 0.15 0.01 1.54 0.18 2 0.36 0.00 0.07 0.00 0.34 0.01 0.06 0.00 0.04 0.00 0.72 0.06 NEaar 2826b SC2Bto1b England Star Carr 245-250cm TA 028810 54º 12' 51.28" -000º 25' 24.30" opercula Bithynia tentaculata 2 0.38 0.00 0.22 0.00 0.57 0.00 0.12 0.00 0.14 0.02 1.75 0.01 2 0.35 0.00 0.07 0.00 0.33 0.00 0.08 0.01 0.04 0.00 0.74 0.03 NEaar 2827b SC2Bto2b England Star Carr 245-250cm TA 028810 54º 12' 51.28" -000º 25' 24.30" opercula Bithynia tentaculata 2 0.39 0.00 0.21 0.01 0.57 0.01 0.11 0.01 0.15 0.02 2.08 0.00 2 0.36 0.00 0.07 0.00 0.33 0.00 0.06 0.00 0.03 0.00 0.88 0.04 NEaar 2828b SC5Bto1b England Star Carr 524-528cm TA 028810 54º 12' 51.28" -000º 25' 24.30" opercula Bithynia tentaculata 2 0.44 0.00 0.20 0.01 0.65 0.01 0.13 0.01 0.15 0.02 1.40 0.01 3 0.38 0.00 0.08 0.00 0.37 0.00 0.11 0.00 0.04 0.00 0.68 0.01 NEaar 2829b SC5Bto2b England Star Carr 524-528cm TA 028810 54º 12' 51.28" -000º 25' 24.30" opercula Bithynia tentaculata 2 0.42 0.01 0.21 0.01 0.64 0.00 0.13 0.00 0.17 0.01 1.44 0.04 2 0.38 0.00 0.08 0.00 0.38 0.00 0.10 0.00 0.04 0.00 0.61 0.02 NEaar 2830b SC5Bto3b England Star Carr 524-528cm TA 028810 54º 12' 51.28" -000º 25' 24.30" opercula Bithynia tentaculata 2 0.42 0.01 0.19 0.01 0.60 0.00 0.12 0.00 0.19 0.01 1.29 0.01 2 0.38 0.00 0.07 0.00 0.36 0.01 0.07 0.00 0.03 0.00 0.66 0.07 NEaar 6247b Spr2Bto1b England Sproughton borehole 9, 50-80 cm TM 133443 52º 03' 19.95" 001º 06' 41.57" opercula Bithynia tentaculata 2 0.38 0.01 0.13 0.00 0.64 0.00 0.17 0.00 0.10 0.02 1.42 0.01 2 0.39 0.00 0.08 0.00 0.39 0.01 0.09 0.01 0.05 0.00 0.66 0.02 NEaar 6248b Spr2Bto2b England Sproughton borehole 9, 50-80 cm TM 133443 52º 03' 19.95" 001º 06' 41.57" opercula Bithynia tentaculata 2 0.37 0.01 0.11 0.00 0.60 0.01 0.14 0.00 0.13 0.07 1.34 0.01 2 0.38 0.00 0.08 0.00 0.40 0.00 0.09 0.00 0.05 0.00 0.73 0.00 NEaar 6249b Spr2Bto3b England Sproughton borehole 9, 50-80 cm TM 133443 52º 03' 19.95" 001º 06' 41.57" opercula Bithynia tentaculata 2 0.41 0.02 0.14 0.00 0.66 0.01 0.17 0.00 0.13 0.00 1.52 0.04 2 0.38 0.00 0.08 0.00 0.37 0.01 0.09 0.00 0.05 0.00 0.66 0.11 NEaar 6250b Spr2Bto4b England Sproughton borehole 9, 50-80 cm TM 133443 52º 03' 19.95" 001º 06' 41.57" opercula Bithynia tentaculata 2 0.39 0.01 0.12 0.00 0.64 0.00 0.15 0.00 0.11 0.01 1.46 0.00 2 0.36 0.00 0.07 0.00 0.29 0.00 0.09 0.00 0.05 0.00 0.88 0.02 NEaar 1217b CBto3b England Cassington 4B, top 10cm SP 482107 51º 47' 10.14" -001º 18' 14.62" opercula Bithynia tentaculata 2 0.50 0.02 0.19 0.02 0.81 0.01 0.18 0.01 0.08 0.01 1.16 0.04 2 0.43 0.00 0.09 0.00 0.54 0.00 0.12 0.00 0.07 0.00 0.74 0.00 NEaar 1218b CBto4b England Cassington 4B, top 10cm SP 482107 51º 47' 10.14" -001º 18' 14.62" opercula Bithynia tentaculata 2 0.49 0.01 0.18 0.01 0.81 0.01 0.19 0.01 0.09 0.00 1.18 0.00 2 0.43 0.03 0.11 0.02 0.52 0.03 0.12 0.01 0.07 0.01 0.72 0.02 NEaar 1219b CBto5b England Cassington 4B, top 10cm SP 482107 51º 47' 10.14" -001º 18' 14.62" opercula Bithynia tentaculata 2 0.51 0.02 0.19 0.01 0.83 0.01 0.20 0.01 0.09 0.01 1.01 0.00 2 0.43 0.00 0.10 0.00 0.50 0.00 0.13 0.00 0.07 0.00 0.62 0.00 NEaar 3053b CBto6b England Cassington 4B, top 10cm SP 482107 51º 47' 10.14" -001º 18' 14.62" opercula Bithynia tentaculata 2 0.51 0.01 0.15 0.02 0.82 0.00 0.18 0.00 0.15 0.01 1.00 0.01 2 0.43 0.00 0.09 0.00 0.48 0.00 0.11 0.00 0.06 0.00 0.60 0.04 NEaar 2843b IsBto1b England Isleworth Middle Devensian TQ 158746 51º 27' 28.92" -000º 19' 58.98" opercula Bithynia tentaculata 2 0.58 0.00 0.19 0.00 0.86 0.00 0.21 0.01 0.13 0.00 0.95 0.09 2 0.46 0.00 0.11 0.00 0.52 0.00 0.15 0.00 0.07 0.00 0.62 0.00 NEaar 2844b IsBto2b England Isleworth Middle Devensian TQ 158746 51º 27' 28.92" -000º 19' 58.98" opercula Bithynia tentaculata 2 0.57 0.00 0.20 0.01 0.88 0.00 0.21 0.00 0.15 0.01 1.00 0.02 2 0.45 0.00 0.11 0.00 0.52 0.01 0.13 0.00 0.07 0.00 0.65 0.01 NEaar 2845b IsBto3b England Isleworth Middle Devensian TQ 158746 51º 27' 28.92" -000º 19' 58.98" opercula Bithynia tentaculata 2 0.57 0.01 0.20 0.00 0.86 0.00 0.20 0.00 0.11 0.01 1.04 0.00 2 0.43 0.00 0.09 0.00 0.55 0.00 0.13 0.01 0.08 0.01 0.74 0.02 THAA dried out in hydrolysis oven NEaar 2846b IsBto4b England Isleworth Middle Devensian TQ 158746 51º 27' 28.92" -000º 19' 58.98" opercula Bithynia tentaculata 2 0.55 0.01 0.21 0.00 0.83 0.01 0.20 0.00 0.14 0.00 1.01 0.02 2 0.46 0.00 0.11 0.00 0.51 0.00 0.14 0.00 0.07 0.00 0.68 0.00 THAA dried out in hydrolysis oven NEaar 2407b EMRBto1b England East Mersea, Restaurant site Sample 3 TM 053136 51º 46' 58.40" 000º 58' 36.18" opercula Bithynia tentaculata 2 0.61 0.00 0.23 0.00 0.90 0.01 0.24 0.00 0.14 0.01 0.67 0.00 2 0.49 0.00 0.13 0.00 0.43 0.00 0.18 0.00 0.08 0.00 0.62 0.00 NEaar 2408b EMRBto2b England East Mersea, Restaurant site Sample 3 TM 053136 51º 46' 58.40" 000º 58' 36.18" opercula Bithynia tentaculata 2 0.60 0.01 0.19 0.00 0.90 0.00 0.21 0.00 0.11 0.00 0.83 0.00 2 0.48 0.00 0.11 0.00 0.50 0.00 0.14 0.00 0.07 0.00 0.63 0.01 NEaar 2392b CoBto1b England Coston Ip IIb, 15-25cm TG 062065 52º 37' 00.13" 001º 02' 46.69" opercula Bithynia tentaculata 2 0.64 0.02 0.19 0.01 0.91 0.00 0.24 0.00 0.15 0.01 0.77 0.01 2 0.50 0.00 0.13 0.00 0.61 0.00 0.16 0.00 0.08 0.00 0.62 0.01 NEaar 2393b CoBto2b England Coston Ip IIb, 15-25cm TG 062065 52º 37' 00.13" 001º 02' 46.69" opercula Bithynia tentaculata 2 0.61 0.00 0.20 0.00 0.94 0.01 0.22 0.00 0.12 0.00 0.81 0.01 2 0.52 0.00 0.13 0.00 0.64 0.00 0.17 0.00 0.08 0.00 0.66 0.00 NEaar 2394b CoBto4b England Coston Ip IIb, 15-25cm TG 062065 52º 37' 00.13" 001º 02' 46.69" opercula Bithynia tentaculata 2 0.60 0.00 0.21 0.00 0.93 0.01 0.25 0.01 0.14 0.01 0.85 0.02 2 0.50 0.00 0.13 0.00 0.61 0.00 0.17 0.00 0.09 0.00 0.70 0.00 NEaar 2726b MaBto1b England Maxey bulk TF 126075 52º 39' 11.44" -000º 20' 06.96" opercula Bithynia tentaculata 2 0.63 0.00 0.25 0.00 0.94 0.00 0.27 0.00 0.17 0.01 0.75 0.00 2 0.51 0.00 0.15 0.00 0.58 0.00 0.18 0.00 0.09 0.00 0.56 0.00 NEaar 2727b MaBto2b England Maxey bulk TF 126075 52º 39' 11.44" -000º 20' 06.96" opercula Bithynia tentaculata 2 0.63 0.00 0.25 0.01 0.96 0.01 0.27 0.00 0.16 0.00 0.74 0.00 2 0.53 0.00 0.16 0.00 0.61 0.00 0.19 0.00 0.09 0.00 0.57 0.00 NEaar 2728b MaBto3b England Maxey bulk TF 126075 52º 39' 11.44" -000º 20' 06.96" opercula Bithynia tentaculata 2 0.63 0.00 0.25 0.00 0.96 0.01 0.26 0.01 0.16 0.00 0.68 0.00 2 0.49 0.00 0.14 0.00 0.53 0.00 0.17 0.00 0.08 0.00 0.53 0.00 NEaar 2729b MaBto4b England Maxey bulk TF 126075 52º 39' 11.44" -000º 20' 06.96" opercula Bithynia tentaculata 2 0.52 0.00 0.22 0.01 0.85 0.01 0.20 0.00 0.13 0.01 0.94 0.01 2 0.43 0.01 0.11 0.00 0.45 0.00 0.13 0.00 0.06 0.00 0.63 0.00 FAA & THAA much lower than other Maxey samples NEaar 2831b WBto1b England Woolpack Farm sample collected by C. Gao TL 2993 6840 52º 17' 52.62" -000º 05' 39.98" opercula Bithynia tentaculata 2 0.65 0.01 0.17 0.02 0.93 0.00 0.26 0.00 0.17 0.00 0.57 0.00 2 0.52 0.00 0.13 0.00 0.59 0.00 0.17 0.00 0.09 0.00 0.51 0.00 NEaar 2000b CJBto3b England Jaywick Sands Channel iv TM 146128 51º 46' 19.98" 001º 06' 39.09" opercula Bithynia tentaculata 3 0.60 0.00 0.24 0.01 0.91 0.02 0.26 0.00 0.15 0.01 0.79 0.02 2 0.49 0.00 0.14 0.00 0.50 0.01 0.16 0.01 0.08 0.00 0.58 0.01 NEaar 2038b CJBto1b England Jaywick Sands Channel iv TM 146128 51º 46' 19.98" 001º 06' 39.09" opercula Bithynia tentaculata 2 0.63 0.01 0.23 0.00 0.93 0.00 0.24 0.00 0.14 0.00 0.73 0.01 2 0.52 0.00 0.16 0.00 0.61 0.00 0.18 0.00 0.09 0.00 0.64 0.01 NEaar 2039b CJBto2b England Jaywick Sands Channel iv TM 146128 51º 46' 19.98" 001º 06' 39.09" opercula Bithynia tentaculata 2 0.62 0.00 0.20 0.03 0.92 0.00 0.25 0.00 0.14 0.02 0.63 0.01 2 0.52 0.00 0.15 0.00 0.60 0.02 0.18 0.00 0.08 0.00 0.54 0.00 NEaar 2040b CJBto4b England Jaywick Sands Channel iv TM 146128 51º 46' 19.98" 001º 06' 39.09" opercula Bithynia tentaculata 2 0.63 0.01 0.22 0.03 0.92 0.01 0.23 0.00 0.13 0.01 0.64 0.02 2 0.53 0.00 0.16 0.00 0.62 0.01 0.17 0.00 0.09 0.00 0.59 0.00 NEaar 4258b ST92Bto1b England Saham Toney Sample 92 TF 913020 52º 34' 54.29" 000º 49' 25.95" opercula Bithynia tentaculata 2 0.63 0.02 0.17 0.01 0.92 0.00 0.24 0.00 0.16 0.01 0.63 0.01 2 0.52 0.00 0.13 0.00 0.59 0.00 0.17 0.00 0.11 0.00 0.55 0.00 NEaar 4259b ST92Bto2b England Saham Toney Sample 92 TF 913020 52º 34' 54.29" 000º 49' 25.95" opercula Bithynia tentaculata 2 0.64 0.00 0.20 0.01 0.92 0.00 0.23 0.00 0.13 0.00 0.68 0.00 2 0.53 0.00 0.13 0.00 0.61 0.00 0.17 0.00 0.09 0.01 0.59 0.00 NEaar 4260b ST92Bto3b England Saham Toney Sample 92 TF 913020 52º 34' 54.29" 000º 49' 25.95" opercula Bithynia tentaculata 2 0.63 0.00 0.17 0.00 0.92 0.00 0.23 0.00 0.13 0.01 0.64 0.01 2 0.53 0.00 0.13 0.00 0.62 0.01 0.17 0.00 0.10 0.00 0.53 0.00 NEaar 4261b ST92Bto4b England Saham Toney Sample 92 TF 913020 52º 34' 54.29" 000º 49' 25.95" opercula Bithynia tentaculata 2 0.62 0.00 0.17 0.01 0.94 0.02 0.24 0.01 0.13 0.00 0.72 0.00 2 0.54 0.00 0.13 0.00 0.63 0.00 0.18 0.00 0.10 0.00 0.60 0.01 NEaar 2645b ItBto1b England Itteringham Ip I BMP3 TG 151304 52º 49' 40.06" 001º 11' 35.59" opercula Bithynia tentaculata 2 0.65 0.01 0.21 0.00 0.94 0.00 0.27 0.00 0.15 0.00 0.71 0.00 2 0.50 0.01 0.13 0.00 0.56 0.02 0.18 0.00 0.09 0.01 0.60 0.00 NEaar 2468b TCBto1b England Tattershall Castle Ip IIb, sample (76K) TF 210570 53º 05' 46.23" -000º 11' 33.86" opercula Bithynia tentaculata 2 0.63 0.00 0.21 0.00 0.94 0.02 0.25 0.00 0.18 0.00 0.71 0.01 2 0.53 0.01 0.14 0.00 0.63 0.00 0.18 0.00 0.09 0.00 0.55 0.01 NEaar 2469b TCBto2b England Tattershall Castle Ip IIb, sample (76K) TF 210570 53º 05' 46.23" -000º 11' 33.86" opercula Bithynia tentaculata 2 0.61 0.02 0.21 0.00 0.95 0.01 0.25 0.00 0.17 0.00 0.73 0.00 2 0.55 0.00 0.15 0.00 0.62 0.01 0.19 0.00 0.10 0.00 0.53 0.01 NEaar 2470b TCBto3b England Tattershall Castle Ip IIb, sample (76K) TF 210570 53º 05' 46.23" -000º 11' 33.86" opercula Bithynia tentaculata 2 0.62 0.01 0.20 0.00 0.94 0.01 0.24 0.00 0.16 0.00 0.81 0.01 2 0.53 0.00 0.14 0.00 0.59 0.00 0.18 0.00 0.09 0.00 0.63 0.00 NEaar 2471b TCBto4b England Tattershall Castle Ip IIb, sample (76K) TF 210570 53º 05' 46.23" -000º 11' 33.86" opercula Bithynia tentaculata 2 0.60 0.00 0.20 0.00 0.93 0.03 0.24 0.00 0.18 0.00 0.68 0.01 2 0.53 0.00 0.13 0.00 0.60 0.00 0.17 0.00 0.08 0.00 0.56 0.01 NEaar 2851b Bo2Bto1b England Bobbitshole sample collected by R. Markham TM 148414 52º 01' 44.13" 001º 07' 53.66" opercula Bithynia tentaculata 2 0.64 0.00 0.20 0.00 0.92 0.01 0.24 0.00 0.14 0.00 0.80 0.00 2 0.53 0.00 0.14 0.00 0.61 0.00 0.19 0.00 0.10 0.00 0.61 0.01 NEaar 2852b Bo2Bto2b England Bobbitshole sample collected by R. Markham TM 148414 52º 01' 44.13" 001º 07' 53.66" opercula Bithynia tentaculata 2 0.64 0.00 0.21 0.01 0.93 0.01 0.24 0.00 0.15 0.00 0.74 0.00 2 0.51 0.00 0.13 0.00 0.56 0.01 0.18 0.01 0.09 0.00 0.58 0.00 NEaar 2853b Bo2Bto3b England Bobbitshole sample collected by R. Markham TM 148414 52º 01' 44.13" 001º 07' 53.66" opercula Bithynia tentaculata 2 0.63 0.01 0.19 0.00 0.95 0.02 0.23 0.01 0.13 0.00 0.72 0.02 2 0.51 0.00 0.13 0.00 0.58 0.00 0.18 0.00 0.09 0.00 0.58 0.00 NEaar 2403b ShBto1b England Shropham organic silts TM 005938 52º 30' 17.30" 000º 57' 16.34" opercula Bithynia tentaculata 2 0.66 0.01 0.20 0.00 0.99 0.01 0.27 0.00 0.13 0.00 0.69 0.01 3 0.53 0.00 0.13 0.00 0.63 0.01 0.18 0.00 0.10 0.01 0.55 0.00 NEaar 2404b ShBto2b England Shropham organic silts TM 005938 52º 30' 17.30" 000º 57' 16.34" opercula Bithynia tentaculata 2 0.64 0.00 0.21 0.01 0.95 0.04 0.28 0.01 0.16 0.01 0.75 0.03 2 0.53 0.00 0.13 0.00 0.60 0.01 0.18 0.00 0.09 0.00 0.60 0.00 NEaar 2405b ShBto3b England Shropham organic silts TM 005938 52º 30' 17.30" 000º 57' 16.34" opercula Bithynia tentaculata 2 0.63 0.01 0.20 0.00 0.98 0.02 0.25 0.01 0.14 0.00 0.73 0.02 2 0.52 0.00 0.13 0.00 0.58 0.01 0.18 0.00 0.09 0.00 0.63 0.01 NEaar 2406b ShBto4b England Shropham organic silts TM 005938 52º 30' 17.30" 000º 57' 16.34" opercula Bithynia tentaculata 2 0.63 0.01 0.19 0.02 0.98 0.01 0.26 0.01 0.14 0.01 0.72 0.01 2 0.55 0.01 0.13 0.00 0.61 0.01 0.20 0.02 0.09 0.00 0.54 0.02 NEaar 1220b TBto1b England Trafalgar Square New Zealand House Foundation 1957 TQ 292805 51º 30' 25.48" -000º 07' 35.81" opercula Bithynia tentaculata 2 0.63 0.01 0.21 0.01 0.92 0.02 0.25 0.00 0.11 0.01 0.73 0.01 2 0.52 0.00 0.14 0.00 0.63 0.00 0.18 0.00 0.09 0.00 0.52 0.00 NEaar 1221b TBto2b England Trafalgar Square New Zealand House Foundation 1957 TQ 292805 51º 30' 25.48" -000º 07' 35.81" opercula Bithynia tentaculata 2 0.63 0.01 0.20 0.01 0.92 0.01 0.25 0.00 0.11 0.00 0.74 0.00 2 0.52 0.00 0.14 0.01 0.62 0.01 0.20 0.00 0.10 0.01 0.52 0.01 NEaar 1222b TBto3b England Trafalgar Square New Zealand House Foundation 1957 TQ 292805 51º 30' 25.48" -000º 07' 35.81" opercula Bithynia tentaculata 2 0.63 0.00 0.21 0.00 0.90 0.04 0.26 0.00 0.12 0.00 0.68 0.02 2 0.51 0.00 0.14 0.02 0.63 0.00 0.19 0.00 0.11 0.01 0.59 0.00 NEaar 3054b TSBto4b England Trafalgar Square New Zealand House Foundation 1957 TQ 292805 51º 30' 25.48" -000º 07' 35.81" opercula Bithynia tentaculata 2 0.65 0.00 0.18 0.03 0.94 0.01 0.26 0.00 0.16 0.00 0.67 0.00 2 0.53 0.00 0.13 0.00 0.61 0.00 0.18 0.00 0.11 0.01 0.53 0.01 NEaar 3055b TSBto5b England Trafalgar Square New Zealand House Foundation 1957 TQ 292805 51º 30' 25.48" -000º 07' 35.81" opercula Bithynia tentaculata 2 0.65 0.01 0.17 0.01 0.98 0.01 0.27 0.01 0.16 0.01 0.68 0.02 2 0.54 0.01 0.13 0.00 0.62 0.00 0.18 0.01 0.11 0.00 0.52 0.03 NEaar 3056b TSBto6b England Trafalgar Square New Zealand House Foundation 1957 TQ 292805 51º 30' 25.48" -000º 07' 35.81" opercula Bithynia tentaculata 2 0.64 0.00 0.16 0.01 0.93 0.00 0.25 0.00 0.18 0.00 0.68 0.00 2 0.53 0.01 0.13 0.00 0.60 0.02 0.19 0.03 0.10 0.00 0.45 0.04 NEaar 4266b ST94Bto1b England Saham Toney Sample 94, white laminated silt TF 913020 52º 34' 54.29" 000º 49' 25.95" opercula Bithynia tentaculata 2 0.66 0.01 0.15 0.00 0.96 0.00 0.25 0.00 0.15 0.02 0.77 0.05 2 0.55 0.00 0.13 0.00 0.66 0.00 0.19 0.00 0.12 0.00 0.63 0.01 NEaar 4267b ST94Bto2b England Saham Toney Sample 94, white laminated silt TF 913020 52º 34' 54.29" 000º 49' 25.95" opercula Bithynia tentaculata 2 0.66 0.01 0.16 0.01 1.21 0.33 0.25 0.01 0.16 0.03 0.42 0.31 2 0.54 0.00 0.12 0.00 0.59 0.02 0.19 0.00 0.10 0.01 0.49 0.08 NEaar 3306b TTK3Bto1b England Bardon Quarry, Kirkby-on-Bain Area 3, Trent TF 233607 53º 07' 44.02" -000º 09' 25.14" opercula Bithynia tentaculata 2 0.62 0.01 0.16 0.00 0.92 0.01 0.26 0.00 0.15 0.00 0.74 0.04 2 0.51 0.00 0.12 0.00 0.62 0.01 0.17 0.00 0.09 0.00 0.57 0.08 NEaar 3307b TTK3Bto2b England Bardon Quarry, Kirkby-on-Bain Area 3, Trent TF 233607 53º 07' 44.02" -000º 09' 25.14" opercula Bithynia tentaculata 2 0.64 0.01 0.16 0.00 0.93 0.01 0.26 0.01 0.15 0.00 0.67 0.02 2 0.52 0.00 0.13 0.00 0.58 0.00 0.19 0.00 0.10 0.00 0.53 0.03 NEaar 3308b TTK3Bto3b England Bardon Quarry, Kirkby-on-Bain Area 3, Trent TF 233607 53º 07' 44.02" -000º 09' 25.14" opercula Bithynia tentaculata 2 0.61 0.01 0.14 0.00 0.92 0.01 0.24 0.00 0.14 0.00 0.76 0.00 2 0.53 0.00 0.13 0.00 0.61 0.04 0.20 0.03 0.09 0.00 0.54 0.01 NEaar 4262b ST93Bto1b England Saham Toney Sample 93, Belgrandia Silt TF 913020 52º 34' 54.29" 000º 49' 25.95" opercula Bithynia tentaculata 2 0.66 0.02 0.18 0.00 0.96 0.01 0.29 0.00 0.17 0.00 0.64 0.07 2 0.54 0.00 0.14 0.00 0.63 0.00 0.20 0.00 0.11 0.01 0.54 0.03 NEaar 4263b ST93Bto2b England Saham Toney Sample 93, Belgrandia Silt TF 913020 52º 34' 54.29" 000º 49' 25.95" opercula Bithynia tentaculata 2 0.63 0.00 0.19 0.02 0.94 0.03 0.26 0.00 0.14 0.00 0.72 0.02 2 0.54 0.00 0.13 0.00 0.60 0.00 0.18 0.00 0.10 0.01 0.58 0.01 NEaar 4264b ST93Bto3b England Saham Toney Sample 93, Belgrandia Silt TF 913020 52º 34' 54.29" 000º 49' 25.95" opercula Bithynia tentaculata 2 0.64 0.02 0.18 0.01 0.93 0.00 0.26 0.00 0.15 0.00 0.79 0.02 2 0.54 0.00 0.13 0.00 0.62 0.02 0.18 0.00 0.10 0.02 0.60 0.07 NEaar 4265b ST93Bto4b England Saham Toney Sample 93, Belgrandia Silt TF 913020 52º 34' 54.29" 000º 49' 25.95" opercula Bithynia tentaculata 2 0.66 0.02 0.19 0.00 0.95 0.00 0.29 0.00 0.17 0.00 0.71 0.01 2 0.55 0.00 0.14 0.00 0.63 0.01 0.20 0.00 0.11 0.01 0.59 0.02 NEaar 3151b ItNBto1b England Itteringham, ITTB site Itteringham Gravel Pit, NWHCM: 1988.127, from phial NWHCM: 1988.127.58. From depth 1-25cm, Bed d, brown detritus mud with some sand. TG 151304 52º 49' 40.06" 001º 11' 35.59" opercula Bithynia tentaculata 2 0.63 0.00 0.14 0.01 0.94 0.01 0.24 0.00 0.14 0.01 0.65 0.00 2 0.55 0.00 0.14 0.00 0.63 0.01 0.19 0.00 0.11 0.00 0.56 0.00 NEaar 3152b ItNBto2b England Itteringham, ITTB site Itteringham Gravel Pit, NWHCM: 1988.127, from phial NWHCM: 1988.127.58. From depth 1-25cm, Bed d, brown detritus mud with some sand. TG 151304 52º 49' 40.06" 001º 11' 35.59" opercula Bithynia tentaculata 2 0.63 0.00 0.14 0.00 0.93 0.00 0.24 0.00 0.15 0.00 0.62 0.00 4 0.54 0.00 0.13 0.00 0.64 0.01 0.19 0.00 0.10 0.00 0.49 0.01 NEaar 3153b ItNBto3b England Itteringham, ITTB site Itteringham Gravel Pit, NWHCM: 1988.127, from phial NWHCM: 1988.127.58. From depth 1-25cm, Bed d, brown detritus mud with some sand. TG 151304 52º 49' 40.06" 001º 11' 35.59" opercula Bithynia tentaculata 2 0.62 0.00 0.14 0.00 0.93 0.00 0.24 0.00 0.15 0.00 0.75 0.01 3 0.54 0.00 0.13 0.00 0.65 0.01 0.18 0.00 0.10 0.00 0.57 0.01 NEaar 3154b ItNBto4b England Itteringham, ITTB site Itteringham Gravel Pit, NWHCM: 1988.127, from phial NWHCM: 1988.127.58. From depth 1-25cm, Bed d, brown detritus mud with some sand. TG 151304 52º 49' 40.06" 001º 11' 35.59" opercula Bithynia tentaculata 2 0.64 0.00 0.15 0.00 0.95 0.01 0.26 0.00 0.18 0.00 0.68 0.00 2 0.56 0.00 0.14 0.00 0.64 0.01 0.21 0.01 0.11 0.00 0.50 0.00 NEaar 2730b EcBto1b England Eckington sample D SO 919417 52º 04' 23.49" -002º 07' 05.55" opercula Bithynia tentaculata 2 0.67 0.02 0.21 0.02 0.97 0.01 0.27 0.01 0.14 0.01 0.52 0.06 2 0.54 0.00 0.15 0.00 0.66 0.00 0.20 0.00 0.11 0.00 0.56 0.00 NEaar 2730ib EcBto1ib England Eckington sample D SO 919417 52º 04' 23.49" -002º 07' 05.55" opercula Bithynia tentaculata 2 0.66 0.00 0.20 0.00 0.92 0.00 0.26 0.00 0.16 0.00 0.56 0.00 NEaar 2731b EcBto2b England Eckington sample D SO 919417 52º 04' 23.49" -002º 07' 05.55" opercula Bithynia tentaculata 2 0.65 0.02 0.21 0.01 0.97 0.01 0.28 0.01 0.16 0.01 0.65 0.08 2 0.53 0.00 0.15 0.00 0.58 0.00 0.19 0.00 0.09 0.00 0.58 0.00 NEaar 2731ib EcBto2ib England Eckington sample D SO 919417 52º 04' 23.49" -002º 07' 05.55" opercula Bithynia tentaculata 2 0.64 0.00 0.19 0.00 0.94 0.01 0.27 0.00 0.16 0.00 0.68 0.00 NEaar 2732b EcBto3b England Eckington sample D SO 919417 52º 04' 23.49" -002º 07' 05.55" opercula Bithynia tentaculata 2 0.63 0.02 0.20 0.01 0.95 0.00 0.27 0.01 0.14 0.00 0.57 0.11 2 0.54 0.00 0.16 0.00 0.58 0.00 0.19 0.00 0.10 0.00 0.48 0.01 NEaar 2732ib EcBto3ib England Eckington sample D SO 919417 52º 04' 23.49" -002º 07' 05.55" opercula Bithynia tentaculata 1 0.64 0.21 0.93 0.27 0.19 0.64 NEaar 2733b EcBto4b England Eckington sample D SO 919417 52º 04' 23.49" -002º 07' 05.55" opercula Bithynia tentaculata 2 0.64 0.02 0.20 0.01 0.95 0.01 0.27 0.01 0.14 0.01 0.52 0.10 1 0.54 0.15 0.52 0.19 0.09 0.52 NEaar 2734b CNIBto1b England Cropthorne New Inn sample collected by D.H. Keen SO 997443 52º 05' 47.86" -002º 00' 15.82" opercula Bithynia tentaculata 2 0.65 0.02 0.22 0.03 0.98 0.00 0.29 0.01 0.16 0.01 0.78 0.07 2 0.53 0.00 0.16 0.00 0.63 0.02 0.20 0.00 0.09 0.00 0.62 0.01 NEaar 2734ib CNIBto1ib England Cropthorne New Inn sample collected by D.H. Keen SO 997443 52º 05' 47.86" -002º 00' 15.82" opercula Bithynia tentaculata 2 0.65 0.01 0.19 0.01 0.99 0.02 0.29 0.00 0.17 0.00 0.86 0.01 NEaar 2735b CNIBto2b England Cropthorne New Inn sample collected by D.H. Keen SO 997443 52º 05' 47.86" -002º 00' 15.82" opercula Bithynia tentaculata 2 0.66 0.02 0.24 0.00 0.97 0.01 0.30 0.00 0.17 0.01 0.69 0.00 2 0.54 0.00 0.16 0.00 0.62 0.00 0.20 0.00 0.10 0.00 0.56 0.00 NEaar 2735ib CNIBto2ib England Cropthorne New Inn sample collected by D.H. Keen SO 997443 52º 05' 47.86" -002º 00' 15.82" opercula Bithynia tentaculata 2 0.65 0.01 0.21 0.00 1.01 0.01 0.31 0.00 0.17 0.00 0.73 0.00 NEaar 2736b CNIBto3b England Cropthorne New Inn sample collected by D.H. Keen SO 997443 52º 05' 47.86" -002º 00' 15.82" opercula Bithynia tentaculata 2 0.65 0.02 0.21 0.02 0.96 0.02 0.26 0.00 0.15 0.01 0.71 0.08 2 0.55 0.00 0.15 0.00 0.64 0.00 0.20 0.00 0.09 0.00 0.63 0.01 NEaar 2736ib CNIBto3ib England Cropthorne New Inn sample collected by D.H. Keen SO 997443 52º 05' 47.86" -002º 00' 15.82" opercula Bithynia tentaculata 2 0.64 0.00 0.17 0.01 0.97 0.00 0.25 0.00 0.14 0.00 0.82 0.00 NEaar 2737b CNIBto4b England Cropthorne New Inn sample collected by D.H. Keen SO 997443 52º 05' 47.86" -002º 00' 15.82" opercula Bithynia tentaculata 2 0.63 0.00 0.24 0.00 0.95 0.00 0.27 0.01 0.15 0.01 0.76 0.02 2 0.54 0.00 0.15 0.00 0.63 0.01 0.19 0.00 0.09 0.00 0.61 0.01 NEaar 3309b TTK2Bto1b England Bardon Quarry, Kirkby-on-Bain Area 2, Trent TF 233607 53º 07' 44.02" -000º 09' 25.14" opercula Bithynia tentaculata 2 0.68 0.00 0.22 0.00 0.96 0.00 0.32 0.01 0.19 0.00 0.55 0.00 2 0.59 0.00 0.20 0.00 0.71 0.00 0.27 0.00 0.14 0.00 0.51 0.00 NEaar 3310b TTK2Bto2b England Bardon Quarry, Kirkby-on-Bain Area 2, Trent TF 233607 53º 07' 44.02" -000º 09' 25.14" opercula Bithynia tentaculata 2 0.61 0.00 0.15 0.00 0.94 0.00 0.26 0.00 0.14 0.00 0.78 0.03 2 0.52 0.00 0.13 0.00 0.62 0.01 0.19 0.00 0.09 0.00 0.63 0.01 NEaar 3311b TTK2Bto3b England Bardon Quarry, Kirkby-on-Bain Area 2, Trent TF 233607 53º 07' 44.02" -000º 09' 25.14" opercula Bithynia tentaculata 2 0.61 0.00 0.15 0.00 0.93 0.00 0.27 0.00 0.16 0.01 0.65 0.00 2 0.56 0.00 0.14 0.00 0.68 0.00 0.20 0.00 0.11 0.00 0.51 0.03 NEaar 4135b TK2Bto4b England Bardon Quarry, Kirkby-on-Bain Area 2, Trent TF 233607 53º 07' 44.02" -000º 09' 25.14" opercula Bithynia tentaculata 2 0.64 0.01 0.22 0.03 0.93 0.04 0.28 0.01 0.19 0.03 0.59 0.05 2 0.53 0.00 0.15 0.00 0.60 0.00 0.20 0.00 0.10 0.01 0.53 0.05 NEaar 1300b LBto1b England Funthams Lane Unit 3a TL 238979 52º 33' 52.09" -000º 10' 24.10" opercula Bithynia tentaculata 2 0.69 0.01 0.24 0.00 0.96 0.00 0.34 0.00 0.17 0.00 0.50 0.01 2 0.54 0.00 0.16 0.00 0.62 0.00 0.23 0.00 0.12 0.00 0.47 0.00 NEaar 1301b LBto2b England Funthams Lane Unit 3a TL 238979 52º 33' 52.09" -000º 10' 24.10" opercula Bithynia tentaculata 2 0.69 0.01 0.26 0.00 1.00 0.03 0.34 0.01 0.18 0.00 0.56 0.02 2 0.51 0.01 0.15 0.00 0.62 0.01 0.24 0.00 0.13 0.00 0.52 0.01 NEaar 1302b LBto3b England Funthams Lane Unit 3a TL 238979 52º 33' 52.09" -000º 10' 24.10" opercula Bithynia tentaculata 2 0.67 0.00 0.24 0.00 0.96 0.01 0.33 0.00 0.17 0.00 0.53 0.02 2 0.53 0.00 0.16 0.00 0.61 0.01 0.24 0.00 0.12 0.00 0.48 0.00 NEaar 1303b LBto4b England Funthams Lane Unit 3a TL 238979 52º 33' 52.09" -000º 10' 24.10" opercula Bithynia tentaculata 2 0.68 0.01 0.24 0.00 0.97 0.04 0.32 0.00 0.16 0.00 0.58 0.03 2 0.55 0.00 0.16 0.00 0.64 0.02 0.23 0.00 0.12 0.00 0.49 0.00 NEaar 1304b LBto5b England Funthams Lane Unit 3a TL 238979 52º 33' 52.09" -000º 10' 24.10" opercula Bithynia tentaculata 2 0.69 0.00 0.23 0.01 0.97 0.01 0.32 0.01 0.17 0.00 0.57 0.01 2 0.51 0.00 0.13 0.01 0.60 0.01 0.24 0.00 0.12 0.00 0.55 0.01 NEaar 1305b LBto6b England Funthams Lane Unit 3a TL 238979 52º 33' 52.09" -000º 10' 24.10" opercula Bithynia tentaculata 2 0.69 0.01 0.25 0.01 0.99 0.01 0.34 0.00 0.17 0.00 0.53 0.02 2 0.49 0.00 0.13 0.00 0.61 0.01 0.22 0.00 0.12 0.00 0.52 0.00 NEaar 1306b LBto7b England Funthams Lane Unit 3a TL 238979 52º 33' 52.09" -000º 10' 24.10" opercula Bithynia tentaculata 2 0.69 0.00 0.25 0.00 0.98 0.01 0.34 0.00 0.17 0.00 0.53 0.01 2 0.50 0.00 0.14 0.00 0.62 0.01 0.22 0.00 0.12 0.00 0.53 0.02 NEaar 1353b LBto8b England Funthams Lane Unit 3a TL 238979 52º 33' 52.09" -000º 10' 24.10" opercula Bithynia tentaculata 3 0.68 0.01 0.23 0.01 0.96 0.01 0.33 0.00 0.17 0.00 0.56 0.01 2 0.51 0.00 0.14 0.00 0.62 0.02 0.22 0.01 0.12 0.00 0.50 0.02 NEaar 1354b LBto9b England Funthams Lane Unit 3a TL 238979 52º 33' 52.09" -000º 10' 24.10" opercula Bithynia tentaculata 2 0.68 0.00 0.25 0.00 0.99 0.00 0.32 0.00 0.17 0.00 0.58 0.00 2 0.53 0.00 0.14 0.00 0.64 0.01 0.25 0.00 0.13 0.00 0.50 0.01 NEaar 1355b LBto10b England Funthams Lane Unit 3a TL 238979 52º 33' 52.09" -000º 10' 24.10" opercula Bithynia tentaculata 2 0.68 0.00 0.23 0.01 0.94 0.01 0.33 0.01 0.17 0.00 0.53 0.00 2 0.50 0.00 0.13 0.00 0.60 0.00 0.22 0.00 0.12 0.00 0.51 0.00 NEaar 1356b LBto11b England Funthams Lane Unit 3a TL 238979 52º 33' 52.09" -000º 10' 24.10" opercula Bithynia tentaculata 2 0.67 0.00 0.23 0.00 0.95 0.02 0.31 0.01 0.17 0.00 0.54 0.01 2 0.51 0.00 0.14 0.00 0.61 0.00 0.22 0.00 0.12 0.00 0.50 0.00 NEaar 1357b LBto12b England Funthams Lane Unit 3a TL 238979 52º 33' 52.09" -000º 10' 24.10" opercula Bithynia tentaculata 2 0.67 0.00 0.23 0.01 0.94 0.00 0.31 0.00 0.16 0.00 0.69 0.00 2 0.50 0.00 0.14 0.00 0.63 0.01 0.22 0.00 0.11 0.00 0.60 0.00 NEaar 1358b LBto13b England Funthams Lane Unit 3a TL 238979 52º 33' 52.09" -000º 10' 24.10" opercula Bithynia tentaculata 2 0.67 0.00 0.24 0.00 0.95 0.01 0.31 0.00 0.16 0.00 0.54 0.01 2 0.52 0.00 0.14 0.00 0.64 0.01 0.21 0.01 0.12 0.00 0.50 0.01 NEaar 1359b LBto14b England Funthams Lane Unit 3a TL 238979 52º 33' 52.09" -000º 10' 24.10" opercula Bithynia tentaculata 2 0.67 0.00 0.23 0.00 0.98 0.01 0.30 0.00 0.16 0.00 0.58 0.00 2 0.51 0.00 0.14 0.00 0.65 0.01 0.22 0.00 0.12 0.00 0.52 0.00 NEaar 1360b LBto15b England Funthams Lane Unit 3a TL 238979 52º 33' 52.09" -000º 10' 24.10" opercula Bithynia tentaculata 2 0.67 0.00 0.24 0.00 0.94 0.01 0.31 0.00 0.17 0.00 0.54 0.00 2 0.51 0.00 0.14 0.00 0.64 0.00 0.22 0.00 0.12 0.00 0.52 0.00 NEaar 2048b LBto16b England Funthams Lane Unit 3a TL 238979 52º 33' 52.09" -000º 10' 24.10" opercula Bithynia tentaculata 3 0.69 0.01 0.24 0.00 0.99 0.01 0.31 0.01 0.18 0.01 0.53 0.00 2 0.50 0.00 0.14 0.00 0.51 0.00 0.20 0.00 0.09 0.00 0.50 0.00 NEaar 2049b LBto17b England Funthams Lane Unit 3a TL 238979 52º 33' 52.09" -000º 10' 24.10" opercula Bithynia tentaculata 2 0.68 0.00 0.25 0.00 0.97 0.00 0.31 0.01 0.19 0.02 0.54 0.00 2 0.55 0.00 0.17 0.00 0.64 0.00 0.23 0.00 0.12 0.00 0.48 0.00 NEaar 2050b LBto18b England Funthams Lane Unit 3a TL 238979 52º 33' 52.09" -000º 10' 24.10" opercula Bithynia tentaculata 2 0.69 0.00 0.26 0.00 0.99 0.00 0.32 0.00 0.19 0.01 0.54 0.01 2 0.57 0.00 0.17 0.00 0.66 0.01 0.25 0.00 0.13 0.00 0.45 0.00 NEaar 2051b LBto19b England Funthams Lane Unit 3a TL 238979 52º 33' 52.09" -000º 10' 24.10" opercula Bithynia tentaculata 2 0.68 0.00 0.25 0.00 0.98 0.01 0.31 0.00 0.19 0.01 0.51 0.01 2 0.55 0.00 0.16 0.00 0.78 0.01 0.23 0.00 0.14 0.01 0.56 0.01 NEaar 2052b LBto20b England Funthams Lane Unit 3a TL 238979 52º 33' 52.09" -000º 10' 24.10" opercula Bithynia tentaculata 2 0.69 0.00 0.25 0.00 0.99 0.00 0.32 0.00 0.21 0.02 0.54 0.01 2 0.56 0.02 0.16 0.00 0.76 0.00 0.23 0.00 0.14 0.00 0.53 0.01 NEaar 2053b LBto21b England Funthams Lane Unit 3a TL 238979 52º 33' 52.09" -000º 10' 24.10" opercula Bithynia tentaculata 2 0.68 0.00 0.26 0.00 0.99 0.00 0.33 0.00 0.22 0.01 0.52 0.02 2 0.54 0.00 0.16 0.00 0.61 0.00 0.23 0.00 0.12 0.00 0.48 0.00 NEaar 2197b LBto22b England Funthams Lane Unit 3a TL 238979 52º 33' 52.09" -000º 10' 24.10" opercula Bithynia tentaculata 2 0.69 0.00 0.23 0.01 0.99 0.01 0.33 0.00 0.19 0.00 0.59 0.01 2 0.50 0.00 0.15 0.00 0.52 0.00 0.21 0.00 0.10 0.01 0.57 0.01 NEaar 2198b LBto23b England Funthams Lane Unit 3a TL 238979 52º 33' 52.09" -000º 10' 24.10" opercula Bithynia tentaculata 3 0.71 0.01 0.24 0.02 0.99 0.02 0.32 0.00 0.19 0.00 0.50 0.03 2 0.50 0.00 0.15 0.00 0.56 0.01 0.20 0.00 0.09 0.00 0.49 0.01 NEaar 2199b LBto24b England Funthams Lane Unit 3a TL 238979 52º 33' 52.09" -000º 10' 24.10" opercula Bithynia tentaculata 2 0.70 0.01 0.25 0.00 0.98 0.00 0.32 0.00 0.18 0.00 0.53 0.00 2 0.55 0.00 0.17 0.00 0.63 0.01 0.23 0.00 0.11 0.00 0.47 0.00 NEaar 2200b LBto25b England Funthams Lane Unit 3a TL 238979 52º 33' 52.09" -000º 10' 24.10" opercula Bithynia tentaculata 2 0.70 0.01 0.24 0.01 0.99 0.01 0.32 0.00 0.18 0.00 0.58 0.00 2 0.50 0.00 0.15 0.00 0.55 0.00 0.20 0.00 0.09 0.00 0.49 0.00 NEaar 2746b StHBto1b England Stanton Harcourt 1021A SO 414051 51º 44' 33.43" -001º 24' 01.20" opercula Bithynia tentaculata 2 0.66 0.00 0.27 0.00 0.96 0.00 0.30 0.00 0.17 0.01 0.64 0.00 2 0.55 0.00 0.18 0.00 0.62 0.00 0.22 0.00 0.11 0.00 0.52 0.00 NEaar 2747b StHBto2b England Stanton Harcourt 1021A SO 414051 51º 44' 33.43" -001º 24' 01.20" opercula Bithynia tentaculata 2 0.66 0.00 0.28 0.01 0.96 0.01 0.31 0.00 0.17 0.00 0.68 0.00 2 0.56 0.00 0.18 0.00 0.64 0.01 0.24 0.00 0.12 0.00 0.58 0.00 NEaar 2748b StHBto3b England Stanton Harcourt 1021A SO 414051 51º 44' 33.43" -001º 24' 01.20" opercula Bithynia tentaculata 2 0.67 0.00 0.27 0.00 0.99 0.00 0.31 0.00 0.18 0.00 0.69 0.01 2 0.57 0.00 0.19 0.00 0.67 0.01 0.24 0.00 0.12 0.00 0.57 0.01 NEaar 2749b StHBto4b England Stanton Harcourt 1021A SO 414051 51º 44' 33.43" -001º 24' 01.20" opercula Bithynia tentaculata 2 0.65 0.01 0.25 0.04 0.97 0.01 0.33 0.00 0.18 0.01 0.70 0.01 2 0.56 0.00 0.18 0.00 0.61 0.00 0.23 0.00 0.11 0.00 0.58 0.01 NEaar 2664b CrBto1b England Crayford Norris's Pit, 1952 TQ 514768 51º 28' 09.84" 000º 10' 48.03" opercula Bithynia tentaculata 2 0.67 0.00 0.27 0.01 0.99 0.00 0.31 0.00 0.16 0.01 0.60 0.03 2 0.57 0.01 0.18 0.00 0.59 0.01 0.23 0.00 0.12 0.00 0.44 0.00 NEaar 2665b CrBto2b England Crayford Norris's Pit, 1952 TQ 514768 51º 28' 09.84" 000º 10' 48.03" opercula Bithynia tentaculata 2 0.68 0.01 0.27 0.01 0.99 0.01 0.32 0.00 0.18 0.01 0.53 0.03 2 0.59 0.00 0.18 0.00 0.62 0.01 0.24 0.00 0.11 0.00 0.47 0.00 NEaar 2666b CrBto3b England Crayford Norris's Pit, 1952 TQ 514768 51º 28' 09.84" 000º 10' 48.03" opercula Bithynia tentaculata 2 0.67 0.01 0.29 0.00 0.98 0.02 0.33 0.01 0.18 0.00 0.58 0.07 2 0.59 0.00 0.19 0.00 0.65 0.00 0.24 0.00 0.12 0.00 0.51 0.01 NEaar 2667b CrBto4b England Crayford Norris's Pit, 1952 TQ 514768 51º 28' 09.84" 000º 10' 48.03" opercula Bithynia tentaculata 2 0.68 0.00 0.28 0.00 0.98 0.00 0.31 0.00 0.17 0.01 0.55 0.01 2 0.57 0.00 0.18 0.00 0.62 0.01 0.23 0.01 0.11 0.00 0.43 0.00 NEaar 2638b BwBto1b England Barnwell Brady collection, NHM TL 463588 52º 12' 27.28" 000º 08' 28.73" opercula Bithynia tentaculata 2 0.69 0.01 0.22 0.00 0.99 0.00 0.30 0.00 0.16 0.01 0.53 0.01 2 0.58 0.01 0.16 0.00 0.67 0.02 0.23 0.00 0.11 0.00 0.48 0.01 NEaar 2639b BwBto2b England Barnwell Brady collection, NHM TL 463588 52º 12' 27.28" 000º 08' 28.73" opercula Bithynia tentaculata 2 0.69 0.00 0.24 0.01 1.00 0.01 0.33 0.02 0.17 0.01 0.54 0.01 2 0.58 0.00 0.17 0.00 0.63 0.00 0.25 0.00 0.13 0.00 0.46 0.00 NEaar 2738b AoSBto1b England Ailstone-on-Stour sample collected by D.H. Keen SP 211512 52º 09' 29.76" -001º 41' 29.55" opercula Bithynia tentaculata 2 0.67 0.00 0.27 0.00 1.00 0.00 0.32 0.01 0.18 0.01 0.61 0.01 2 0.58 0.00 0.19 0.00 0.70 0.00 0.24 0.00 0.12 0.00 0.54 0.00 NEaar 2739b AoSBto2b England Ailstone-on-Stour sample collected by D.H. Keen SP 211512 52º 09' 29.76" -001º 41' 29.55" opercula Bithynia tentaculata 3 0.67 0.00 0.26 0.01 1.00 0.01 0.31 0.01 0.17 0.01 0.68 0.01 2 0.55 0.00 0.17 0.00 0.67 0.01 0.22 0.00 0.11 0.00 0.62 0.01 NEaar 2740b AoSBto3b England Ailstone-on-Stour sample collected by D.H. Keen SP 211512 52º 09' 29.76" -001º 41' 29.55" opercula Bithynia tentaculata 2 0.67 0.00 0.31 0.00 0.97 0.02 0.33 0.01 0.19 0.00 0.49 0.04 2 0.58 0.00 0.21 0.00 0.69 0.00 0.25 0.00 0.12 0.00 0.50 0.00 NEaar 2741b AoSBto4b England Ailstone-on-Stour sample collected by D.H. Keen SP 211512 52º 09' 29.76" -001º 41' 29.55" opercula Bithynia tentaculata 2 0.67 0.00 0.29 0.00 0.99 0.00 0.32 0.00 0.19 0.00 0.62 0.01 2 0.56 0.00 0.19 0.00 0.62 0.02 0.24 0.00 0.12 0.01 0.51 0.01 NEaar 2461b HRBto1b England Histon Road, Cambridge Pleistocene interglacial, Bulk sample II, F4 TL 444611 52º 13' 43.48" 000º 06' 52.23" opercula Bithynia tentaculata 2 0.67 0.02 0.24 0.01 1.00 0.00 0.33 0.00 0.18 0.00 0.55 0.00 2 0.57 0.00 0.17 0.00 0.65 0.00 0.24 0.00 0.12 0.00 0.49 0.00 NEaar 2462b HRBto2b England Histon Road, Cambridge Pleistocene interglacial, Bulk sample II, F4 TL 444611 52º 13' 43.48" 000º 06' 52.23" opercula Bithynia tentaculata 2 0.68 0.00 0.23 0.00 0.99 0.01 0.32 0.00 0.18 0.00 0.56 0.00 2 0.57 0.00 0.17 0.00 0.66 0.01 0.25 0.00 0.13 0.00 0.50 0.01 NEaar 2742b StrBto1b England Strensham sample collected by D.H. Keen SO 904397 52º 03' 18.66" -002º 08' 24.14" opercula Bithynia tentaculata 2 0.68 0.00 0.30 0.00 1.01 0.00 0.36 0.00 0.22 0.00 0.57 0.00 2 0.56 0.00 0.21 0.00 0.65 0.01 0.27 0.00 0.15 0.01 0.49 0.00 NEaar 2743b StrBto2b England Strensham sample collected by D.H. Keen SO 904397 52º 03' 18.66" -002º 08' 24.14" opercula Bithynia tentaculata 3 0.67 0.00 0.25 0.00 1.00 0.01 0.33 0.00 0.19 0.00 0.62 0.00 2 0.55 0.00 0.17 0.00 0.64 0.01 0.24 0.00 0.11 0.00 0.53 0.00 NEaar 2744b StrBto3b England Strensham sample collected by D.H. Keen SO 904397 52º 03' 18.66" -002º 08' 24.14" opercula Bithynia tentaculata 2 0.69 0.00 0.29 0.00 1.01 0.00 0.35 0.01 0.21 0.00 0.57 0.01 2 0.55 0.00 0.18 0.00 0.61 0.01 0.24 0.00 0.12 0.01 0.48 0.00 NEaar 2745b StrBto4b England Strensham sample collected by D.H. Keen SO 904397 52º 03' 18.66" -002º 08' 24.14" opercula Bithynia tentaculata 2 0.68 0.00 0.27 0.00 1.00 0.00 0.34 0.00 0.21 0.00 0.60 0.00 2 0.52 0.00 0.17 0.00 0.55 0.03 0.24 0.00 0.11 0.00 0.52 0.00 NEaar 2672b StuBto1b England Stutton sample provided by R.C. Preece TM 150330 51º 57' 12.35" 001º 07' 45.18" opercula Bithynia tentaculata 2 0.66 0.00 0.25 0.04 0.97 0.01 0.30 0.00 0.16 0.00 0.48 0.00 2 0.59 0.01 0.18 0.00 0.65 0.00 0.23 0.00 0.14 0.00 0.47 0.00 NEaar 2673b StuBto2b England Stutton sample provided by R.C. Preece TM 150330 51º 57' 12.35" 001º 07' 45.18" opercula Bithynia tentaculata 2 0.69 0.01 0.28 0.00 1.00 0.01 0.33 0.00 0.18 0.00 0.45 0.01 2 0.60 0.00 0.20 0.00 0.68 0.02 0.25 0.00 0.15 0.01 0.41 0.01 NEaar 2674b StuBto3b England Stutton sample provided by R.C. Preece TM 150330 51º 57' 12.35" 001º 07' 45.18" opercula Bithynia tentaculata 2 0.67 0.00 0.28 0.00 0.98 0.01 0.30 0.00 0.17 0.00 0.51 0.00 2 0.59 0.00 0.20 0.00 0.64 0.00 0.26 0.00 0.14 0.01 0.40 0.00 NEaar 2675b StuBto4b England Stutton sample provided by R.C. Preece TM 150330 51º 57' 12.35" 001º 07' 45.18" opercula Bithynia tentaculata 2 0.67 0.00 0.28 0.00 0.96 0.02 0.31 0.01 0.19 0.00 0.51 0.02 2 0.58 0.00 0.19 0.00 0.66 0.00 0.24 0.00 0.12 0.01 0.46 0.01 NEaar 3941b CmBto1b England Coronation Farm borehole, Southrey, Lincolnshire, 6.4-6.5m TF 153668 53º 11' 07.79" -000º 16' 27.50" opercula Bithynia tentaculata 2 0.68 0.00 0.32 0.02 0.93 0.01 0.34 0.01 0.19 0.01 0.52 0.01 2 0.55 0.00 0.19 0.00 0.62 0.01 0.25 0.00 0.13 0.00 0.42 0.05 NEaar 2395b SoBto1b England Somersham Sample SBK 3 19/10/90 TL 375798 52º 23' 54.75" 000º 01' 16.25" opercula Bithynia tentaculata 2 0.70 0.00 0.25 0.00 1.01 0.01 0.34 0.01 0.17 0.00 0.56 0.01 2 0.57 0.00 0.17 0.00 0.66 0.00 0.25 0.00 0.12 0.01 0.47 0.00 NEaar 2396b SoBto2b England Somersham Sample SBK 3 19/10/90 TL 375798 52º 23' 54.75" 000º 01' 16.25" opercula Bithynia tentaculata 2 0.71 0.00 0.27 0.00 0.98 0.01 0.31 0.00 0.17 0.03 0.51 0.00 2 0.58 0.00 0.18 0.00 0.69 0.01 0.24 0.01 0.11 0.00 0.42 0.02 NEaar 2397b SoBto3b England Somersham Sample SBK 3 19/10/90 TL 375798 52º 23' 54.75" 000º 01' 16.25" opercula Bithynia tentaculata 2 0.68 0.01 0.23 0.03 0.98 0.00 0.34 0.00 0.18 0.00 0.49 0.00 2 0.59 0.00 0.18 0.00 0.66 0.01 0.25 0.00 0.12 0.00 0.43 0.00 NEaar 2398b SoBto4b England Somersham Sample SBK 3 19/10/90 TL 375798 52º 23' 54.75" 000º 01' 16.25" opercula Bithynia tentaculata 2 0.67 0.01 0.22 0.03 1.00 0.01 0.32 0.01 0.17 0.00 0.53 0.01 2 0.60 0.01 0.19 0.00 0.69 0.02 0.25 0.00 0.12 0.00 0.46 0.00 NEaar 3806b NB1Bto1b England Norton Bottom, Newark Area 1 SK 863588 53º 07' 08.73" -000º 42' 37.32" opercula Bithynia tentaculata 2 0.68 0.00 0.26 0.00 0.98 0.01 0.34 0.01 0.19 0.00 0.50 0.00 2 0.55 0.01 0.20 0.00 0.63 0.00 0.25 0.00 0.13 0.00 0.45 0.02 NEaar 3807b NB1Bto2b England Norton Bottom, Newark Area 1 SK 863588 53º 07' 08.73" -000º 42' 37.32" opercula Bithynia tentaculata 2 0.68 0.01 0.22 0.01 0.96 0.00 0.35 0.00 0.20 0.00 0.47 0.00 2 0.52 0.00 0.17 0.00 0.58 0.00 0.23 0.00 0.12 0.01 0.44 0.01 NEaar 3808b NB1Bto3b England Norton Bottom, Newark Area 1 SK 863588 53º 07' 08.73" -000º 42' 37.32" opercula Bithynia tentaculata 2 0.66 0.00 0.21 0.02 0.85 0.01 0.33 0.00 0.17 0.00 0.49 0.01 2 0.55 0.01 0.19 0.00 0.58 0.00 0.25 0.00 0.13 0.01 0.45 0.00 NEaar 3809b NB2Bto1b England Norton Bottom, Newark Area 2 SK 863588 53º 07' 08.73" -000º 42' 37.32" opercula Bithynia tentaculata 2 0.68 0.00 0.24 0.00 0.97 0.01 0.34 0.01 0.19 0.00 0.51 0.01 2 0.55 0.01 0.19 0.00 0.64 0.00 0.24 0.00 0.13 0.00 0.47 0.02 NEaar 3810b NB2Bto2b England Norton Bottom, Newark Area 2 SK 863588 53º 07' 08.73" -000º 42' 37.32" opercula Bithynia tentaculata 2 0.67 0.00 0.24 0.03 0.98 0.00 0.33 0.00 0.18 0.01 0.57 0.02 2 0.54 0.00 0.18 0.00 0.62 0.02 0.24 0.00 0.12 0.00 0.51 0.03 NEaar 3811b NB2Bto3b England Norton Bottom, Newark Area 2 SK 863588 53º 07' 08.73" -000º 42' 37.32" opercula Bithynia tentaculata 2 0.69 0.00 0.27 0.04 0.95 0.01 0.36 0.00 0.20 0.01 0.50 0.01 2 0.55 0.01 0.18 0.00 0.62 0.00 0.24 0.00 0.12 0.00 0.45 0.01 NEaar 3812b NB3Bto1b England Norton Bottom, Newark Area 3 SK 863588 53º 07' 08.73" -000º 42' 37.32" opercula Bithynia tentaculata 2 0.67 0.00 0.25 0.04 0.97 0.00 0.34 0.01 0.18 0.01 0.54 0.00 2 0.56 0.00 0.19 0.00 0.66 0.00 0.25 0.00 0.13 0.00 0.48 0.01 NEaar 3813b NB3Bto2b England Norton Bottom, Newark Area 3 SK 863588 53º 07' 08.73" -000º 42' 37.32" opercula Bithynia tentaculata 2 0.68 0.00 0.27 0.03 0.97 0.00 0.34 0.00 0.20 0.01 0.50 0.01 2 0.56 0.00 0.20 0.00 0.66 0.01 0.25 0.00 0.14 0.00 0.50 0.01 NEaar 3814b NB3Bto3b England Norton Bottom, Newark Area 3 SK 863588 53º 07' 08.73" -000º 42' 37.32" opercula Bithynia tentaculata 2 0.68 0.00 0.28 0.03 0.97 0.01 0.36 0.01 0.20 0.01 0.49 0.00 2 0.55 0.00 0.19 0.00 0.61 0.00 0.25 0.00 0.13 0.00 0.43 0.01 NEaar 3815b NB4Bto1b England Norton Bottom, Newark Area 4 SK 863588 53º 07' 08.73" -000º 42' 37.32" opercula Bithynia tentaculata 2 0.67 0.01 0.26 0.03 0.99 0.00 0.34 0.00 0.18 0.00 0.53 0.02 2 0.55 0.00 0.18 0.00 0.63 0.01 0.24 0.00 0.13 0.00 0.50 0.02 NEaar 3816b NB4Bto2b England Norton Bottom, Newark Area 4 SK 863588 53º 07' 08.73" -000º 42' 37.32" opercula Bithynia tentaculata 2 0.71 0.00 0.28 0.05 0.89 0.00 0.34 0.00 0.20 0.00 0.36 0.00 2 0.57 0.01 0.20 0.00 0.57 0.01 0.26 0.01 0.12 0.01 0.36 0.00 NEaar 3817b NB4Bto3b England Norton Bottom, Newark Area 4 SK 863588 53º 07' 08.73" -000º 42' 37.32" opercula Bithynia tentaculata 2 0.69 0.00 0.28 0.03 0.78 0.01 0.37 0.02 0.21 0.01 0.42 0.01 2 0.62 0.00 0.22 0.00 0.71 0.00 0.29 0.00 0.16 0.00 0.30 0.00 NEaar 3942b NBN2Bto1b England Norton Bottoms, Newark Sample 2 SK 863588 53º 07' 08.73" -000º 42' 37.32" opercula Bithynia tentaculata 2 0.66 0.02 0.25 0.04 0.98 0.00 0.33 0.00 0.18 0.01 0.49 0.01 2 0.55 0.00 0.19 0.00 0.62 0.00 0.25 0.00 0.13 0.00 0.46 0.00 NEaar 3943b NBN2Bto2b England Norton Bottoms, Newark Sample 2 SK 863588 53º 07' 08.73" -000º 42' 37.32" opercula Bithynia tentaculata 2 0.69 0.00 0.29 0.00 1.00 0.01 0.34 0.01 0.20 0.00 0.54 0.02 2 0.55 0.00 0.20 0.00 0.64 0.01 0.26 0.00 0.14 0.00 0.52 0.02 NEaar 3944b NBN2Bto3b England Norton Bottoms, Newark Sample 2 SK 863588 53º 07' 08.73" -000º 42' 37.32" opercula Bithynia tentaculata 2 0.69 0.00 0.28 0.04 0.98 0.00 0.35 0.00 0.20 0.00 0.50 0.00 2 0.56 0.00 0.21 0.00 0.66 0.00 0.27 0.00 0.15 0.00 0.46 0.00 NEaar 2847b BlBto1b England Block Fen 1999 TL 429843 52º 26' 15.33" 000º 06' 08.73" opercula Bithynia tentaculata 2 0.72 0.00 0.23 0.00 1.00 0.02 0.34 0.01 0.21 0.00 0.47 0.02 2 0.57 0.00 0.17 0.00 0.65 0.01 0.27 0.02 0.13 0.00 0.43 0.01 NEaar 2848b BlBto2b England Block Fen 1999 TL 429843 52º 26' 15.33" 000º 06' 08.73" opercula Bithynia tentaculata 2 0.71 0.00 0.21 0.00 1.00 0.00 0.33 0.00 0.18 0.00 0.51 0.00 3 0.52 0.00 0.15 0.00 0.59 0.01 0.24 0.01 0.11 0.00 0.46 0.01 NEaar 2849b BlBto3b England Block Fen 1999 TL 429843 52º 26' 15.33" 000º 06' 08.73" opercula Bithynia tentaculata 2 0.72 0.00 0.23 0.00 1.02 0.04 0.35 0.00 0.20 0.01 0.51 0.01 3 0.53 0.01 0.17 0.00 0.62 0.01 0.25 0.01 0.12 0.00 0.48 0.01 NEaar 2850b BlBto4b England Block Fen 1999 TL 429843 52º 26' 15.33" 000º 06' 08.73" opercula Bithynia tentaculata 2 0.72 0.00 0.24 0.00 1.00 0.00 0.35 0.00 0.20 0.00 0.48 0.01 2 0.57 0.00 0.18 0.00 0.67 0.01 0.27 0.00 0.15 0.00 0.43 0.00 NEaar 2399b SoBtro1b England Somersham Sample SBK 3 19/10/90 TL 375798 52º 23' 54.75" 000º 01' 16.25" opercula Bithynia troschelii 2 0.73 0.00 0.26 0.01 0.93 0.01 0.32 0.00 0.20 0.01 0.36 0.00 2 0.63 0.00 0.19 0.00 0.76 0.02 0.27 0.00 0.13 0.01 0.30 0.01 NEaar 2400b SoBtro2b England Somersham Sample SBK 3 19/10/90 TL 375798 52º 23' 54.75" 000º 01' 16.25" opercula Bithynia troschelii 2 0.72 0.00 0.24 0.00 0.97 0.01 0.31 0.00 0.16 0.01 0.37 0.00 2 0.63 0.01 0.18 0.00 0.71 0.00 0.25 0.00 0.13 0.01 0.33 0.00 NEaar 2401b SoBtro3b England Somersham Sample SBK 3 19/10/90 TL 375798 52º 23' 54.75" 000º 01' 16.25" opercula Bithynia troschelii 2 0.72 0.00 0.25 0.00 0.99 0.01 0.31 0.01 0.16 0.00 0.36 0.01 2 0.64 0.01 0.19 0.00 0.74 0.01 0.25 0.00 0.12 0.00 0.30 0.00 NEaar 2402b SoBtro4b England Somersham Sample SBK 3 19/10/90 TL 375798 52º 23' 54.75" 000º 01' 16.25" opercula Bithynia troschelii 2 0.71 0.01 0.29 0.00 0.99 0.01 0.30 0.01 0.17 0.02 0.36 0.01 2 0.62 0.00 0.19 0.00 0.74 0.02 0.25 0.00 0.12 0.00 0.32 0.00 NEaar 5115b EBC1Bto1b England Ebbsfleet Channel ex. Burchell colln, Temperate Bed, Upper Loam, Upper part TQ 611743 51º 26' 39.33" 000º 19' 06.32" opercula Bithynia tentaculata 2 0.68 0.00 0.24 0.00 0.98 0.01 0.32 0.00 0.19 0.01 0.60 0.01 2 0.59 0.00 0.20 0.00 0.67 0.02 0.26 0.01 0.14 0.00 0.50 0.00 NEaar 5122b EBC4Bto1b England Ebbsfleet Channel ex. Burchell colln, Temperate Bed, Upper loam, lower part TQ 611743 51º 26' 39.33" 000º 19' 06.32" opercula Bithynia tentaculata 2 0.69 0.00 0.28 0.03 1.00 0.01 0.33 0.00 0.19 0.01 0.61 0.01 2 0.60 0.00 0.21 0.00 0.72 0.00 0.25 0.01 0.13 0.00 0.52 0.00 NEaar 5123b EBC4Bto2b England Ebbsfleet Channel ex. Burchell colln, Temperate Bed, Upper loam, lower part TQ 611743 51º 26' 39.33" 000º 19' 06.32" opercula Bithynia tentaculata 2 0.68 0.00 0.26 0.02 0.98 0.03 0.31 0.00 0.18 0.00 0.51 0.02 2 0.61 0.00 0.20 0.00 0.74 0.02 0.26 0.00 0.15 0.00 0.47 0.01 NEaar 3129b THBto1b England Brough, Field House Farm B SK 851953 53º 07' 19.42" -000º 44' 08.47" opercula Bithynia tentaculata 2 0.70 0.00 0.24 0.00 1.00 0.01 0.33 0.00 0.19 0.01 0.52 0.00 2 0.62 0.00 0.22 0.00 0.76 0.03 0.27 0.01 0.15 0.00 0.48 0.01 NEaar 3130b THBto2b England Brough, Field House Farm B SK 851953 53º 07' 19.42" -000º 44' 08.47" opercula Bithynia tentaculata 2 0.69 0.00 0.24 0.00 0.99 0.01 0.32 0.02 0.19 0.00 0.49 0.01 2 0.60 0.00 0.21 0.00 0.71 0.00 0.27 0.01 0.15 0.00 0.47 0.00 NEaar 3131b THBto3b England Brough, Field House Farm B SK 851953 53º 07' 19.42" -000º 44' 08.47" opercula Bithynia tentaculata 2 0.69 0.00 0.23 0.00 0.96 0.00 0.32 0.00 0.20 0.00 0.48 0.00 2 0.60 0.00 0.21 0.00 0.72 0.00 0.27 0.00 0.15 0.00 0.44 0.00 NEaar 4137b THBto4b England Brough, Field House Farm B SK 851953 53º 07' 19.42" -000º 44' 08.47" opercula Bithynia tentaculata 2 0.68 0.01 0.23 0.00 0.99 0.00 0.30 0.01 0.18 0.00 0.51 0.01 2 0.61 0.00 0.21 0.00 0.76 0.00 0.26 0.01 0.16 0.00 0.53 0.01 NEaar 4138b THBto5b England Brough, Field House Farm B SK 851953 53º 07' 19.42" -000º 44' 08.47" opercula Bithynia tentaculata 2 0.69 0.00 0.25 0.00 0.99 0.01 0.33 0.00 0.22 0.00 0.50 0.01 2 0.59 0.01 0.21 0.00 0.64 0.01 0.28 0.02 0.16 0.02 0.45 0.06 NEaar 4139b THBto6b England Brough, Field House Farm B SK 851953 53º 07' 19.42" -000º 44' 08.47" opercula Bithynia tentaculata 2 0.70 0.00 0.27 0.00 0.99 0.00 0.33 0.00 0.21 0.00 0.49 0.01 2 0.60 0.01 0.21 0.00 0.70 0.01 0.27 0.00 0.17 0.00 0.47 0.00 NEaar 2640b IlBto1b England Ilford Uphall Pit TQ 437860 51º 33' 14.70" 000º 04' 22.68" opercula Bithynia tentaculata 2 0.70 0.00 0.32 0.00 0.99 0.00 0.35 0.00 0.19 0.00 0.48 0.01 2 0.58 0.01 0.21 0.00 0.64 0.03 0.27 0.00 0.12 0.01 0.41 0.01 NEaar 2641b IlBto2b England Ilford Uphall Pit TQ 437860 51º 33' 14.70" 000º 04' 22.68" opercula Bithynia tentaculata 2 0.71 0.01 0.33 0.00 0.97 0.02 0.36 0.00 0.18 0.00 0.41 0.01 2 0.62 0.01 0.23 0.00 0.67 0.00 0.28 0.00 0.16 0.00 0.37 0.00 NEaar 2856b MIBto1b England Maidenhall Stoke Bone Bed, sample collected by R. Markham TM 161429 52º 02' 30.80" 001º 09' 05.19" opercula Bithynia tentaculata 2 0.71 0.00 0.26 0.00 0.98 0.02 0.33 0.01 0.18 0.00 0.48 0.01 2 0.60 0.00 0.22 0.00 0.70 0.01 0.29 0.00 0.15 0.00 0.43 0.01 NEaar 2857b MIBto2b England Maidenhall Stoke Bone Bed, sample collected by R. Markham TM 161429 52º 02' 30.80" 001º 09' 05.19" opercula Bithynia tentaculata 2 0.71 0.00 0.25 0.00 1.01 0.00 0.32 0.00 0.19 0.00 0.49 0.00 2 0.61 0.00 0.20 0.00 0.68 0.00 0.26 0.00 0.15 0.00 0.43 0.00 NEaar 1908b LP4Bto1b England West Thurrock (Lion Pit) Sample 4, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.73 0.01 0.28 0.02 0.93 0.04 0.37 0.01 0.23 0.00 0.46 0.02 2 0.63 0.00 0.21 0.00 0.75 0.01 0.30 0.00 0.15 0.00 0.42 0.01 NEaar 1909b LP4Bto2b England West Thurrock (Lion Pit) Sample 4, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.73 0.02 0.25 0.00 0.97 0.01 0.36 0.01 0.20 0.01 0.45 0.01 2 0.63 0.00 0.20 0.01 0.75 0.00 0.29 0.00 0.14 0.00 0.40 0.00 NEaar 1910b LP4Bto3b England West Thurrock (Lion Pit) Sample 4, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.72 0.03 0.27 0.03 0.99 0.01 0.36 0.02 0.19 0.02 0.50 0.06 2 0.63 0.00 0.21 0.00 0.74 0.00 0.30 0.00 0.16 0.00 0.41 0.01 NEaar 1911b LP4Bto4b England West Thurrock (Lion Pit) Sample 4, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.72 0.02 0.32 0.03 1.00 0.00 0.38 0.01 0.20 0.01 0.50 0.03 2 0.62 0.00 0.21 0.00 0.73 0.00 0.29 0.00 0.15 0.00 0.42 0.01 NEaar 1912b LP4Bto5b England West Thurrock (Lion Pit) Sample 4, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.74 0.01 0.25 0.03 0.97 0.03 0.37 0.01 0.21 0.03 0.47 0.02 2 0.63 0.00 0.21 0.00 0.72 0.07 0.29 0.00 0.17 0.01 0.43 0.04 NEaar 1913b LP4Bto6b England West Thurrock (Lion Pit) Sample 4, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.72 0.02 0.30 0.00 1.00 0.01 0.36 0.01 0.20 0.01 0.43 0.04 2 0.62 0.01 0.22 0.00 0.72 0.00 0.29 0.00 0.16 0.00 0.40 0.01 NEaar 1914b LP4Bto7b England West Thurrock (Lion Pit) Sample 4, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.72 0.02 0.31 0.02 1.00 0.01 0.37 0.01 0.20 0.01 0.47 0.03 2 0.62 0.00 0.21 0.00 0.75 0.00 0.29 0.00 0.14 0.00 0.42 0.01 NEaar 1935b LP4Bto8b England West Thurrock (Lion Pit) Sample 4, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.69 0.01 0.28 0.00 0.98 0.01 0.35 0.00 0.19 0.01 0.49 0.02 2 0.63 0.01 0.20 0.00 0.72 0.01 0.28 0.00 0.15 0.01 0.39 0.01 NEaar 1936b LP4Bto9b England West Thurrock (Lion Pit) Sample 4, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.69 0.00 0.31 0.01 0.98 0.00 0.34 0.01 0.20 0.00 0.41 0.00 2 0.62 0.00 0.21 0.00 0.68 0.00 0.28 0.00 0.15 0.00 0.39 0.00 NEaar 1937b LP4Bto10b England West Thurrock (Lion Pit) Sample 4, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.70 0.01 0.29 0.01 0.96 0.04 0.36 0.00 0.20 0.01 0.43 0.02 2 0.65 0.03 0.18 0.01 0.77 0.00 0.28 0.00 0.16 0.00 0.42 0.01 NEaar 1938b LP4Bto11b England West Thurrock (Lion Pit) Sample 4, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.70 0.00 0.28 0.01 1.00 0.01 0.35 0.00 0.19 0.00 0.49 0.02 2 0.62 0.01 0.20 0.00 0.73 0.00 0.29 0.00 0.14 0.01 0.46 0.01 NEaar 1939b LP4Bto12b England West Thurrock (Lion Pit) Sample 4, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.71 0.01 0.30 0.02 0.99 0.01 0.36 0.00 0.19 0.00 0.41 0.05 2 0.61 0.01 0.20 0.00 0.67 0.01 0.30 0.00 0.14 0.00 0.38 0.01 NEaar 1940b LP4Bto13b England West Thurrock (Lion Pit) Sample 4, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.72 0.02 0.29 0.01 0.98 0.01 0.35 0.00 0.18 0.00 0.46 0.04 2 0.64 0.01 0.21 0.00 0.76 0.00 0.29 0.00 0.15 0.01 0.43 0.01 NEaar 1941b LP4Bto14b England West Thurrock (Lion Pit) Sample 4, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.69 0.02 0.28 0.02 0.99 0.01 0.36 0.00 0.20 0.00 0.54 0.05 2 0.61 0.00 0.20 0.00 0.71 0.01 0.28 0.00 0.14 0.00 0.46 0.00 NEaar 1942b LP4Bto15b England West Thurrock (Lion Pit) Sample 4, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.72 0.00 0.31 0.00 0.99 0.01 0.37 0.00 0.23 0.00 0.42 0.02 2 0.55 0.00 0.16 0.00 0.31 0.00 0.26 0.00 0.12 0.00 0.63 0.00 NEaar 1943b LP4Bto16b England West Thurrock (Lion Pit) Sample 4, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.71 0.00 0.27 0.01 1.00 0.00 0.33 0.00 0.19 0.01 0.42 0.01 2 0.64 0.00 0.20 0.00 0.73 0.00 0.26 0.00 0.14 0.40 0.00 NEaar 1944b LP4Bto17b England West Thurrock (Lion Pit) Sample 4, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.72 0.01 0.30 0.01 1.01 0.00 0.35 0.00 0.19 0.00 0.42 0.02 1 0.61 0.20 0.71 0.28 0.13 0.40 NEaar 1945b LP4Bto18b England West Thurrock (Lion Pit) Sample 4, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.69 0.00 0.31 0.01 1.08 0.13 0.35 0.01 0.19 0.00 0.40 0.01 2 0.63 0.00 0.21 0.01 0.74 0.01 0.30 0.00 0.16 0.01 0.38 0.01 NEaar 1946b LP4Bto19b England West Thurrock (Lion Pit) Sample 4, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.71 0.01 0.31 0.00 1.02 0.04 0.38 0.01 0.21 0.01 0.43 0.04 2 0.64 0.01 0.21 0.00 0.77 0.02 0.31 0.00 0.17 0.01 0.40 0.00 NEaar 1947b LP4Bto20b England West Thurrock (Lion Pit) Sample 4, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.69 0.00 0.28 0.00 0.99 0.01 0.33 0.00 0.17 0.01 0.48 0.02 2 0.63 0.00 0.20 0.00 0.73 0.00 0.30 0.00 0.15 0.00 0.46 0.00 NEaar 1948b LP4Bto21b England West Thurrock (Lion Pit) Sample 4, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.69 0.00 0.28 0.01 0.98 0.01 0.36 0.00 0.19 0.00 0.52 0.03 2 0.62 0.00 0.21 0.00 0.75 0.00 0.30 0.00 0.15 0.00 0.49 0.00 NEaar 1949b LP4Bto22b England West Thurrock (Lion Pit) Sample 4, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.71 0.01 0.27 0.01 1.00 0.00 0.34 0.00 0.18 0.00 0.39 0.02 2 0.61 0.00 0.20 0.00 0.65 0.01 0.29 0.00 0.14 0.00 0.41 0.00 NEaar 1950b LP4Bto23b England West Thurrock (Lion Pit) Sample 4, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.70 0.00 0.30 0.01 0.98 0.00 0.35 0.00 0.18 0.00 0.44 0.02 2 0.62 0.00 0.21 0.00 0.74 0.01 0.29 0.00 0.14 0.00 0.44 0.00 NEaar 1951b LP4Bto24b England West Thurrock (Lion Pit) Sample 4, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.69 0.00 0.29 0.00 0.98 0.00 0.36 0.00 0.19 0.00 0.48 0.01 2 0.62 0.00 0.21 0.00 0.75 0.00 0.29 0.00 0.14 0.00 0.47 0.01 NEaar 1952b LP4Bto25b England West Thurrock (Lion Pit) Sample 4, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.72 0.00 0.28 0.01 0.97 0.00 0.35 0.00 0.20 0.01 0.34 0.02 2 0.65 0.00 0.21 0.00 0.78 0.00 0.30 0.00 0.15 0.00 0.33 0.00 NEaar 0336b ABto2b England West Thurrock (Lion Pit) tramway cutting 8 July 2000 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.70 0.00 0.87 0.03 0.35 0.02 0.17 0.01 0.55 0.01 2 0.60 0.00 0.19 0.00 0.74 0.00 0.29 0.01 0.16 0.00 0.50 0.00 NEaar 1566b LPBto1b England West Thurrock (Lion Pit) tramway cutting 8 July 2000 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.69 0.00 0.29 0.00 0.96 0.03 0.34 0.00 0.19 0.01 0.48 0.01 2 0.63 0.00 0.21 0.00 0.77 0.00 0.30 0.00 0.16 0.00 0.45 0.01 NEaar 1567b LPBto2b England West Thurrock (Lion Pit) tramway cutting 8 July 2000 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.70 0.01 0.27 0.01 0.98 0.02 0.33 0.00 0.17 0.00 0.53 0.01 2 0.62 0.00 0.20 0.00 0.78 0.01 0.29 0.00 0.15 0.00 0.52 0.01 NEaar 5119b EBC3Bto1b England Ebbsfleet Channel ex. Burchell colln, Lowermost Brickearth TQ 611743 51º 26' 39.33" 000º 19' 06.32" opercula Bithynia tentaculata 2 0.71 0.01 0.29 0.00 0.98 0.00 0.36 0.01 0.19 0.01 0.45 0.03 2 0.65 0.00 0.23 0.01 0.81 0.01 0.30 0.01 0.16 0.00 0.41 0.00 NEaar 5120b EBC3Bto2b England Ebbsfleet Channel ex. Burchell colln, Lowermost Brickearth TQ 611743 51º 26' 39.33" 000º 19' 06.32" opercula Bithynia tentaculata 2 0.72 0.00 0.25 0.01 1.00 0.01 0.34 0.00 0.19 0.00 0.42 0.01 2 0.63 0.00 0.20 0.00 0.79 0.00 0.29 0.00 0.16 0.00 0.40 0.01 NEaar 5121b EBC3Bto3b England Ebbsfleet Channel ex. Burchell colln, Lowermost Brickearth TQ 611743 51º 26' 39.33" 000º 19' 06.32" opercula Bithynia tentaculata 2 0.71 0.00 0.24 0.01 1.00 0.01 0.33 0.02 0.18 0.00 0.43 0.01 2 0.61 0.00 0.20 0.00 0.72 0.01 0.29 0.01 0.14 0.00 0.39 0.00 NEaar 2854b STBto1b England Stoke Tunnel, Ipswich Stoke Bone Bed, sample collected by R. Markham TM 162434 52º 02' 46.82" 001º 09' 11.57" opercula Bithynia tentaculata 2 0.71 0.00 0.27 0.00 0.99 0.03 0.34 0.01 0.19 0.00 0.44 0.00 2 0.61 0.00 0.23 0.00 0.71 0.01 0.30 0.01 0.16 0.00 0.41 0.01 NEaar 2855b STBto2b England Stoke Tunnel, Ipswich Stoke Bone Bed, sample collected by R. Markham TM 162434 52º 02' 46.82" 001º 09' 11.57" opercula Bithynia tentaculata 2 0.70 0.00 0.26 0.00 0.98 0.00 0.34 0.00 0.18 0.00 0.49 0.00 2 0.60 0.00 0.21 0.00 0.73 0.00 0.29 0.00 0.15 0.00 0.44 0.00 NEaar 2054b LP3Bto1b England West Thurrock (Lion Pit) Sample 3, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 3 0.72 0.01 0.29 0.00 1.00 0.01 0.37 0.02 0.22 0.01 0.47 0.02 2 0.64 0.00 0.21 0.00 0.75 0.02 0.30 0.00 0.17 0.00 0.40 0.02 NEaar 2055b LP3Bto2b England West Thurrock (Lion Pit) Sample 3, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.71 0.01 0.28 0.00 1.00 0.01 0.35 0.01 0.22 0.01 0.52 0.01 2 0.64 0.00 0.22 0.01 0.76 0.01 0.30 0.01 0.17 0.01 0.47 0.00 NEaar 2056b LP3Bto3b England West Thurrock (Lion Pit) Sample 3, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.72 0.01 0.28 0.00 1.00 0.01 0.36 0.01 0.22 0.03 0.45 0.01 2 0.64 0.02 0.21 0.01 0.74 0.01 0.30 0.00 0.16 0.01 0.43 0.01 NEaar 2057b LP3Bto4b England West Thurrock (Lion Pit) Sample 3, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.72 0.01 0.30 0.00 0.98 0.00 0.35 0.01 0.19 0.01 0.43 0.02 2 0.64 0.00 0.22 0.01 0.74 0.00 0.30 0.01 0.17 0.03 0.37 0.01 NEaar 2058b LP3Bto5b England West Thurrock (Lion Pit) Sample 3, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.71 0.01 0.29 0.00 1.00 0.01 0.35 0.00 0.22 0.00 0.43 0.01 2 0.64 0.00 0.22 0.00 0.77 0.01 0.30 0.00 0.16 0.00 0.39 0.00 NEaar 2059b LP3Bto6b England West Thurrock (Lion Pit) Sample 3, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.72 0.01 0.27 0.00 1.01 0.00 0.36 0.01 0.22 0.06 0.47 0.02 2 0.65 0.01 0.21 0.01 0.72 0.03 0.29 0.01 0.16 0.02 0.47 0.01 NEaar 2060b LP3Bto7b England West Thurrock (Lion Pit) Sample 3, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.72 0.01 0.28 0.00 1.00 0.01 0.35 0.01 0.24 0.06 0.49 0.02 2 0.65 0.01 0.22 0.00 0.72 0.01 0.32 0.01 0.20 0.02 0.43 0.01 NEaar 2061b LP3Bto8b England West Thurrock (Lion Pit) Sample 3, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.71 0.00 0.27 0.02 0.99 0.00 0.36 0.01 0.21 0.00 0.49 0.00 2 0.62 0.01 0.21 0.00 0.67 0.02 0.30 0.00 0.15 0.01 0.43 0.06 NEaar 2062b LP3Bto9b England West Thurrock (Lion Pit) Sample 3, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.71 0.00 0.26 0.02 1.00 0.01 0.36 0.00 0.22 0.01 0.49 0.00 2 0.63 0.01 0.22 0.02 0.67 0.03 0.31 0.00 0.17 0.01 0.42 0.01 NEaar 2063b LP3Bto10b England West Thurrock (Lion Pit) Sample 3, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.70 0.00 0.27 0.03 0.97 0.01 0.36 0.00 0.19 0.01 0.49 0.00 2 0.63 0.00 0.21 0.00 0.71 0.02 0.30 0.01 0.16 0.00 0.40 0.01 NEaar 2064b LP3Bto11b England West Thurrock (Lion Pit) Sample 3, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.71 0.00 0.25 0.03 0.99 0.00 0.35 0.01 0.19 0.01 0.47 0.00 2 0.65 0.01 0.21 0.01 0.75 0.00 0.30 0.00 0.19 0.00 0.40 0.01 NEaar 2065b LP3Bto12b England West Thurrock (Lion Pit) Sample 3, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.71 0.00 0.27 0.03 0.99 0.00 0.36 0.00 0.22 0.02 0.40 0.00 2 0.61 0.03 0.22 0.00 0.74 0.03 0.30 0.01 0.16 0.00 0.36 0.02 NEaar 2066b LP3Bto13b England West Thurrock (Lion Pit) Sample 3, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.71 0.00 0.28 0.03 1.03 0.00 0.36 0.00 0.23 0.00 0.50 0.01 2 0.64 0.21 0.00 0.74 0.01 0.30 0.01 0.16 0.00 0.42 0.02 bad separation of Asx in THAA NEaar 2087b LP3Bto16b England West Thurrock (Lion Pit) Sample 3, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.72 0.01 0.26 0.04 0.97 0.00 0.35 0.00 0.19 0.00 0.43 0.01 2 0.65 0.00 0.21 0.00 0.78 0.00 0.29 0.00 0.14 0.00 0.38 0.00 NEaar 2088b LP3Bto17b England West Thurrock (Lion Pit) Sample 3, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.76 0.01 0.26 0.02 1.00 0.00 0.34 0.00 0.18 0.00 0.28 0.01 2 0.68 0.00 0.21 0.00 0.68 0.00 0.29 0.00 0.15 0.00 0.29 0.00 NEaar 2089b LP3Bto18b England West Thurrock (Lion Pit) Sample 3, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.72 0.01 0.26 0.03 1.00 0.01 0.36 0.00 0.20 0.00 0.53 0.00 2 0.63 0.00 0.22 0.00 0.76 0.00 0.30 0.00 0.15 0.00 0.48 0.00 NEaar 2090b LP3Bto19b England West Thurrock (Lion Pit) Sample 3, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.71 0.01 0.25 0.03 0.99 0.01 0.35 0.00 0.18 0.00 0.51 0.00 2 0.63 0.02 0.21 0.01 0.71 0.00 0.29 0.01 0.16 0.00 0.45 0.01 NEaar 2091b LP3Bto20b England West Thurrock (Lion Pit) Sample 3, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.72 0.01 0.27 0.03 1.00 0.01 0.36 0.00 0.20 0.01 0.44 0.00 2 0.59 0.04 0.21 0.00 0.66 0.00 0.29 0.00 0.16 0.01 0.40 0.01 NEaar 2092b LP3Bto21b England West Thurrock (Lion Pit) Sample 3, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.71 0.02 0.26 0.00 0.99 0.01 0.36 0.01 0.18 0.00 0.43 0.00 2 0.67 0.01 0.22 0.00 0.86 0.00 0.31 0.00 0.20 0.00 0.44 0.01 NEaar 2093b LP3Bto22b England West Thurrock (Lion Pit) Sample 3, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.71 0.00 0.29 0.01 0.99 0.01 0.36 0.00 0.20 0.00 0.51 0.01 2 0.61 0.02 0.21 0.00 0.74 0.01 0.30 0.00 0.16 0.01 0.48 0.02 NEaar 2094b LP3Bto23b England West Thurrock (Lion Pit) Sample 3, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.69 0.00 0.24 0.03 0.93 0.04 0.36 0.00 0.21 0.00 0.39 0.03 2 0.60 0.03 0.22 0.00 0.64 0.00 0.31 0.00 0.18 0.01 0.33 0.04 NEaar 2095b LP3Bto24b England West Thurrock (Lion Pit) Sample 3, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.71 0.01 0.24 0.02 0.98 0.03 0.35 0.00 0.17 0.01 0.51 0.03 2 0.62 0.01 0.22 0.00 0.74 0.01 0.30 0.01 0.16 0.01 0.46 0.01 NEaar 2096b LP3Bto25b England West Thurrock (Lion Pit) Sample 3, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.74 0.03 0.24 0.00 0.99 0.00 0.36 0.00 0.20 0.01 0.48 0.00 2 0.60 0.05 0.21 0.00 0.75 0.01 0.29 0.00 0.16 0.00 0.43 0.01 NEaar 2201b LP3Bto14b England West Thurrock (Lion Pit) Sample 3, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.71 0.00 0.26 0.01 0.98 0.00 0.37 0.00 0.21 0.00 0.45 0.01 2 0.64 0.00 0.23 0.00 0.76 0.00 0.32 0.00 0.17 0.00 0.44 0.00 NEaar 2202b LP3Bto15b England West Thurrock (Lion Pit) Sample 3, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.71 0.00 0.24 0.00 0.99 0.00 0.35 0.00 0.19 0.00 0.48 0.00 2 0.63 0.01 0.21 0.00 0.77 0.00 0.30 0.00 0.15 0.00 0.44 0.00 NEaar 1575b LP5Bto1b England West Thurrock (Lion Pit) Sample 6, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.71 0.00 0.28 0.00 0.99 0.00 0.36 0.00 0.20 0.00 0.45 0.00 2 0.61 0.01 0.20 0.00 0.73 0.01 0.30 0.01 0.15 0.00 0.42 0.00 NEaar 1576b LP5Bto2b England West Thurrock (Lion Pit) Sample 6, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.72 0.00 0.30 0.00 0.98 0.01 0.35 0.00 0.20 0.01 0.48 0.01 2 0.63 0.00 0.22 0.00 0.77 0.00 0.30 0.00 0.15 0.00 0.46 0.00 NEaar 1577b LP5Bto3b England West Thurrock (Lion Pit) Sample 6, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.71 0.00 0.30 0.00 0.99 0.01 0.37 0.01 0.20 0.00 0.52 0.01 2 0.62 0.00 0.23 0.00 0.77 0.00 0.32 0.01 0.17 0.00 0.51 0.01 NEaar 1578b LP5Bto4b England West Thurrock (Lion Pit) Sample 6, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.71 0.00 0.29 0.00 0.99 0.01 0.37 0.00 0.20 0.00 0.49 0.00 2 0.61 0.01 0.20 0.00 0.72 0.01 0.31 0.00 0.16 0.00 0.43 0.00 NEaar 1579b LP5Bto5b England West Thurrock (Lion Pit) Sample 6, Section 5 TQ 598783 51º 28' 50.04" 000º 18' 05.54" opercula Bithynia tentaculata 2 0.70 0.02 0.29 0.00 0.98 0.00 0.36 0.00 0.20 0.00 0.42 0.00 2 0.63 0.00 0.20 0.00 0.71 0.00 0.29 0.00 0.15 0.01 0.38 0.00 THAA updated from original Schreve et al 2006 paper due to integration problem NEaar 2657b SeBto1b England Selsey R.G. West monolith sample SZ 863923 50º 43' 24.01" -000º 46' 38.13" opercula Bithynia tentaculata 2 0.74 0.00 0.27 0.04 1.02 0.00 0.40 0.00 0.22 0.00 0.34 0.00 2 0.61 0.00 0.20 0.00 0.63 0.00 0.31 0.00 0.16 0.00 0.39 0.00 NEaar 2658b SeBto2b England Selsey R.G. West monolith sample SZ 863923 50º 43' 24.01" -000º 46' 38.13" opercula Bithynia tentaculata 2 0.73 0.01 0.28 0.00 1.00 0.00 0.40 0.01 0.23 0.00 0.42 0.00 2 0.62 0.01 0.20 0.00 0.66 0.00 0.31 0.00 0.16 0.00 0.41 0.00 NEaar 2659b SeBto3b England Selsey R.G. West monolith sample SZ 863923 50º 43' 24.01" -000º 46' 38.13" opercula Bithynia tentaculata 2 0.74 0.00 0.30 0.00 1.00 0.00 0.40 0.00 0.22 0.00 0.41 0.00 2 0.62 0.00 0.21 0.00 0.68 0.00 0.32 0.00 0.16 0.00 0.40 0.00 NEaar 1223b APBto3b England Aveley Purfleet Rd, adj pumping station, 0.25-0.33m TQ 552808 51º 30' 15.52" 000º 14' 11.18" opercula Bithynia tentaculata 2 0.72 0.00 0.32 0.02 0.97 0.03 0.40 0.01 0.19 0.01 0.44 0.01 2 0.64 0.01 0.22 0.00 0.73 0.03 0.34 0.00 0.16 0.00 0.39 0.01 NEaar 1224b APBto4b England Aveley Purfleet Rd, adj pumping station, 0.25-0.33m TQ 552808 51º 30' 15.52" 000º 14' 11.18" opercula Bithynia tentaculata 2 0.71 0.00 0.28 0.01 0.96 0.01 0.37 0.01 0.19 0.01 0.44 0.00 2 0.61 0.00 0.21 0.01 0.68 0.02 0.30 0.00 0.15 0.00 0.41 0.01 NEaar 1225b APBto5b England Aveley Purfleet Rd, adj pumping station, 0.25-0.33m TQ 552808 51º 30' 15.52" 000º 14' 11.18" opercula Bithynia tentaculata 2 0.72 0.00 0.27 0.02 0.96 0.01 0.38 0.02 0.19 0.01 0.42 0.00 2 0.64 0.00 0.22 0.01 0.71 0.01 0.33 0.00 0.17 0.00 0.38 0.01 NEaar 1226b APBto6b England Aveley Purfleet Rd, adj pumping station, 0.25-0.33m TQ 552808 51º 30' 15.52" 000º 14' 11.18" opercula Bithynia tentaculata 2 0.71 0.00 0.29 0.00 0.95 0.02 0.38 0.01 0.20 0.03 0.40 0.01 2 0.62 0.01 0.22 0.01 0.71 0.01 0.31 0.00 0.16 0.00 0.37 0.00 NEaar 3946b WWiBto1b England West Wittering BH6, 18/9, 3.80-3.90m SZ 775975 50º 46' 16.81" -000º 54' 02.96" opercula Bithynia tentaculata 2 0.73 0.01 0.29 0.00 1.02 0.01 0.39 0.00 0.20 0.00 0.39 0.03 3 0.64 0.01 0.22 0.01 0.78 0.05 0.32 0.00 0.16 0.00 0.36 0.12 NEaar 3947b WWiBto2b England West Wittering BH6, 18/9, 3.80-3.90m SZ 775975 50º 46' 16.81" -000º 54' 02.96" opercula Bithynia tentaculata 2 0.73 0.00 0.32 0.00 1.02 0.01 0.39 0.00 0.21 0.01 0.41 0.01 2 0.61 0.00 0.22 0.00 0.71 0.00 0.32 0.00 0.17 0.00 0.37 0.01 NEaar 3948b WWiBto3b England West Wittering BH6, 18/9, 3.80-3.90m SZ 775975 50º 46' 16.81" -000º 54' 02.96" opercula Bithynia tentaculata 2 0.75 0.00 0.29 0.00 1.04 0.06 0.41 0.00 0.21 0.00 0.35 0.09 2 0.62 0.00 0.21 0.00 0.70 0.00 0.31 0.00 0.16 0.00 0.39 0.02 NEaar 2754b BGBto1b England Bushley Green sample collected by D.H. Keen SO 862351 52º 00' 49.44" -002º 12' 04.01" opercula Bithynia tentaculata 2 0.72 0.00 0.40 0.00 1.01 0.01 0.41 0.00 0.24 0.01 0.40 0.01 2 0.64 0.00 0.28 0.00 0.68 0.00 0.34 0.00 0.16 0.00 0.37 0.01 NEaar 0891b CGBto1b England Cudmore Grove Unit 3 TM 064143 51º 47' 19.57" 000º 59' 35.01" opercula Bithynia tentaculata 2 0.75 0.00 0.25 0.00 1.01 0.01 0.43 0.01 0.23 0.00 0.41 0.00 2 0.64 0.01 0.22 0.00 0.70 0.01 0.34 0.00 0.19 0.00 0.40 0.00 NEaar 0892b CGBto2b England Cudmore Grove Unit 3 TM 064143 51º 47' 19.57" 000º 59' 35.01" opercula Bithynia tentaculata 2 0.74 0.00 0.26 0.00 1.03 0.00 0.44 0.00 0.23 0.00 0.42 0.00 2 0.62 0.00 0.20 0.00 0.69 0.00 0.32 0.00 0.17 0.00 0.42 0.00 NEaar 0893b CGBto3b England Cudmore Grove Unit 3 TM 064143 51º 47' 19.57" 000º 59' 35.01" opercula Bithynia tentaculata 2 0.75 0.00 0.26 0.00 1.00 0.02 0.45 0.01 0.24 0.00 0.41 0.00 2 0.65 0.01 0.23 0.00 0.72 0.00 0.36 0.01 0.20 0.00 0.38 0.00 NEaar 0894b CGBto4b England Cudmore Grove Unit 3 TM 064143 51º 47' 19.57" 000º 59' 35.01" opercula Bithynia tentaculata 2 0.75 0.00 0.25 0.00 1.01 0.01 0.41 0.00 0.22 0.00 0.41 0.00 2 0.66 0.00 0.23 0.00 0.75 0.00 0.35 0.00 0.19 0.00 0.39 0.00 NEaar 2457b HBto3b England Hackney Sample 7 TQ 3452 8587 51º 33' 18.65" -000º 03' 33.94" opercula Bithynia tentaculata 2 0.73 0.00 0.27 0.00 1.01 0.00 0.40 0.00 0.24 0.00 0.43 0.00 2 0.62 0.00 0.20 0.00 0.72 0.00 0.34 0.01 0.17 0.00 0.40 0.00 NEaar 2632b HBto4b England Hackney Sample 7 TQ 3452 8587 51º 33' 18.65" -000º 03' 33.94" opercula Bithynia tentaculata 2 0.74 0.01 0.27 0.00 1.01 0.00 0.43 0.00 0.23 0.00 0.41 0.00 2 0.63 0.00 0.21 0.00 0.73 0.01 0.35 0.00 0.18 0.00 0.40 0.00 NEaar 4058b CGPEBto1b England Cudmore Grove Sample PE, S. Parfitt colln TM 064143 51º 47' 19.57" 000º 59' 35.01" opercula Bithynia tentaculata 2 0.75 0.00 0.30 0.00 1.02 0.10 0.43 0.02 0.27 0.01 0.31 0.06 2 0.64 0.00 0.26 0.00 0.69 0.01 0.36 0.00 0.19 0.00 0.40 0.03 NEaar 4059b CGPEBto2b England Cudmore Grove Sample PE, S. Parfitt colln TM 064143 51º 47' 19.57" 000º 59' 35.01" opercula Bithynia tentaculata 2 0.75 0.01 0.28 0.03 1.00 0.01 0.44 0.01 0.26 0.00 0.42 0.01 2 0.65 0.00 0.25 0.01 0.68 0.00 0.36 0.00 0.20 0.00 0.43 0.02 NEaar 3945b Belhus Park, AB 0-25cm England Belhus Park AB 0-25cm TQ 575811 51º 30' 22.94" 000º 16' 10.88" opercula Bithynia tentaculata 2 0.77 0.00 0.44 0.01 0.90 0.04 0.49 0.01 0.30 0.01 0.25 0.05 2 0.59 0.00 0.28 0.01 0.55 0.13 0.36 0.02 0.20 0.02 0.23 0.20 NEaar 1896b P1Bto1b England Purfleet Greenlands Shell Bed, mollusc sample 1 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 3 0.76 0.01 0.27 0.00 1.02 0.01 0.46 0.01 0.23 0.00 0.38 0.01 2 0.66 0.00 0.25 0.00 0.81 0.00 0.38 0.00 0.18 0.00 0.39 0.00 NEaar 1897b P1Bto2b England Purfleet Greenlands Shell Bed, mollusc sample 1 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 3 0.76 0.00 0.27 0.01 1.04 0.01 0.46 0.01 0.23 0.01 0.41 0.01 2 0.66 0.00 0.25 0.00 0.80 0.00 0.38 0.00 0.18 0.00 0.38 0.00 NEaar 1898b P1Bto3b England Purfleet Greenlands Shell Bed, mollusc sample 1 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.75 0.00 0.26 0.00 1.03 0.01 0.44 0.01 0.23 0.01 0.32 0.00 2 0.66 0.00 0.26 0.01 0.82 0.00 0.37 0.00 0.17 0.00 0.35 0.00 NEaar 1899b P1Bto4b England Purfleet Greenlands Shell Bed, mollusc sample 1 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.75 0.00 0.27 0.00 1.02 0.00 0.45 0.00 0.25 0.00 0.36 0.00 2 0.66 0.00 0.26 0.00 0.81 0.00 0.38 0.00 0.18 0.00 0.38 0.00 NEaar 1900b P1Bto5b England Purfleet Greenlands Shell Bed, mollusc sample 1 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.75 0.00 0.26 0.00 1.02 0.00 0.45 0.00 0.24 0.01 0.33 0.00 2 0.67 0.00 0.26 0.00 0.81 0.01 0.38 0.00 0.18 0.00 0.35 0.00 NEaar 1901b P1Bto6b England Purfleet Greenlands Shell Bed, mollusc sample 1 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.75 0.00 0.27 0.00 1.03 0.01 0.47 0.00 0.25 0.00 0.36 0.00 2 0.65 0.00 0.25 0.00 0.78 0.01 0.38 0.00 0.18 0.00 0.39 0.00 NEaar 1902b P1Bto7b England Purfleet Greenlands Shell Bed, mollusc sample 1 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.75 0.00 0.26 0.00 1.04 0.00 0.45 0.00 0.24 0.00 0.36 0.00 2 0.67 0.00 0.26 0.00 0.82 0.00 0.39 0.00 0.19 0.00 0.39 0.00 NEaar 1903b P1Bto8b England Purfleet Greenlands Shell Bed, mollusc sample 1 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.76 0.00 0.27 0.00 1.05 0.00 0.46 0.00 0.24 0.00 0.33 0.00 2 0.66 0.00 0.26 0.00 0.79 0.00 0.38 0.00 0.17 0.00 0.33 0.00 NEaar 1904b P1Bto9b England Purfleet Greenlands Shell Bed, mollusc sample 1 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.76 0.00 0.27 0.00 1.04 0.00 0.46 0.00 0.25 0.00 0.33 0.00 2 0.64 0.00 0.23 0.00 0.68 0.00 0.37 0.00 0.18 0.00 0.37 0.00 NEaar 1905b P1Bto10b England Purfleet Greenlands Shell Bed, mollusc sample 1 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.76 0.00 0.27 0.00 1.03 0.01 0.46 0.00 0.25 0.00 0.36 0.00 2 0.55 0.00 0.18 0.00 0.30 0.00 0.31 0.00 0.13 0.00 0.62 0.00 outlier NEaar 1906b P1Bto11b England Purfleet Greenlands Shell Bed, mollusc sample 1 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.75 0.00 0.27 0.00 1.04 0.01 0.46 0.01 0.25 0.02 0.36 0.00 2 0.65 0.00 0.24 0.02 0.77 0.00 0.38 0.00 0.18 0.00 0.35 0.00 NEaar 1907b P1Bto12b England Purfleet Greenlands Shell Bed, mollusc sample 1 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.75 0.00 0.27 0.00 1.03 0.00 0.45 0.00 0.24 0.00 0.34 0.00 2 0.66 0.00 0.25 0.00 0.77 0.00 0.36 0.00 0.17 0.01 0.39 0.01 NEaar 1953b P1Bto13b England Purfleet Greenlands Shell Bed, mollusc sample 1 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.75 0.00 0.26 0.00 1.02 0.00 0.45 0.00 0.24 0.00 0.33 0.00 2 0.67 0.00 0.25 0.00 0.81 0.01 0.38 0.00 0.18 0.00 0.37 0.01 NEaar 1954b P1Bto14b England Purfleet Greenlands Shell Bed, mollusc sample 1 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.76 0.00 0.27 0.00 1.02 0.01 0.46 0.00 0.24 0.00 0.35 0.00 2 0.67 0.00 0.25 0.00 0.79 0.00 0.38 0.00 0.18 0.00 0.34 0.00 NEaar 1955b P1Bto15b England Purfleet Greenlands Shell Bed, mollusc sample 1 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.76 0.00 0.27 0.00 1.02 0.01 0.44 0.01 0.25 0.04 0.35 0.00 2 0.67 0.00 0.26 0.00 0.81 0.01 0.37 0.00 0.18 0.00 0.36 0.00 NEaar 1956b P1Bto16b England Purfleet Greenlands Shell Bed, mollusc sample 1 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.74 0.01 0.31 0.05 1.01 0.02 0.44 0.00 0.23 0.00 0.35 0.00 2 0.68 0.00 0.27 0.00 0.83 0.00 0.39 0.00 0.19 0.00 0.37 0.00 NEaar 1957b P1Bto17b England Purfleet Greenlands Shell Bed, mollusc sample 1 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.74 0.01 0.30 0.04 1.01 0.00 0.43 0.00 0.22 0.01 0.37 0.00 2 0.67 0.00 0.25 0.00 0.81 0.00 0.38 0.00 0.19 0.00 0.32 0.00 NEaar 1958b P1Bto18b England Purfleet Greenlands Shell Bed, mollusc sample 1 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.75 0.00 0.29 0.04 1.01 0.01 0.44 0.01 0.23 0.01 0.37 0.01 2 0.67 0.00 0.25 0.00 0.81 0.00 0.38 0.00 0.17 0.00 0.37 0.00 NEaar 1959b P1Bto19b England Purfleet Greenlands Shell Bed, mollusc sample 1 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.75 0.01 0.32 0.01 1.01 0.01 0.45 0.01 0.23 0.01 0.35 0.00 2 0.67 0.00 0.26 0.00 0.82 0.00 0.39 0.00 0.18 0.00 0.36 0.01 NEaar 1960b P1Bto20b England Purfleet Greenlands Shell Bed, mollusc sample 1 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.74 0.00 0.32 0.00 1.01 0.00 0.45 0.00 0.23 0.00 0.36 0.00 2 0.66 0.00 0.25 0.00 0.81 0.00 0.37 0.00 0.19 0.01 0.38 0.00 NEaar 1961b P1Bto21b England Purfleet Greenlands Shell Bed, mollusc sample 1 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.75 0.01 0.32 0.00 1.00 0.02 0.44 0.00 0.23 0.00 0.33 0.00 2 0.58 0.00 0.19 0.00 0.34 0.00 0.31 0.00 0.13 0.00 0.56 0.00 outlier NEaar 1962b P1Bto22b England Purfleet Greenlands Shell Bed, mollusc sample 1 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.74 0.01 0.30 0.00 1.03 0.01 0.46 0.00 0.23 0.00 0.44 0.00 2 0.66 0.00 0.25 0.00 0.79 0.00 0.37 0.00 0.18 0.00 0.39 0.01 NEaar 1963b P1Bto23b England Purfleet Greenlands Shell Bed, mollusc sample 1 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.75 0.01 0.32 0.00 1.00 0.01 0.46 0.01 0.23 0.01 0.36 0.01 2 0.66 0.00 0.25 0.00 0.78 0.00 0.37 0.00 0.18 0.00 0.36 0.00 NEaar 1964b P1Bto24b England Purfleet Greenlands Shell Bed, mollusc sample 1 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.75 0.01 0.32 0.00 1.03 0.00 0.46 0.00 0.24 0.00 0.37 0.00 2 0.65 0.00 0.24 0.00 0.78 0.00 0.37 0.01 0.19 0.01 0.37 0.01 NEaar 1965b P1Bto25b England Purfleet Greenlands Shell Bed, mollusc sample 1 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.75 0.01 0.29 0.04 1.03 0.00 0.44 0.00 0.22 0.01 0.39 0.00 2 0.65 0.02 0.25 0.01 0.81 0.00 0.38 0.00 0.18 0.00 0.35 0.01 NEaar 2388b BEBto1b England Barling, Essex organic silty clay TQ 935899 51º 34' 27.24" 000º 47' 33.78" opercula Bithynia tentaculata 2 0.78 0.00 0.38 0.00 1.03 0.01 0.49 0.00 0.30 0.01 0.35 0.00 2 0.65 0.00 0.28 0.03 0.72 0.01 0.37 0.00 0.21 0.01 0.30 0.07 NEaar 2389b BEBto2b England Barling, Essex organic silty clay TQ 935899 51º 34' 27.24" 000º 47' 33.78" opercula Bithynia tentaculata 2 0.78 0.00 0.38 0.00 1.06 0.00 0.49 0.00 0.32 0.02 0.38 0.00 2 0.65 0.01 0.27 0.00 0.74 0.01 0.38 0.00 0.20 0.01 0.37 0.01 NEaar 2390b BEBto3b England Barling, Essex organic silty clay TQ 935899 51º 34' 27.24" 000º 47' 33.78" opercula Bithynia tentaculata 2 0.76 0.00 0.35 0.00 1.04 0.04 0.48 0.01 0.28 0.00 0.39 0.01 2 0.67 0.00 0.27 0.00 0.75 0.01 0.39 0.00 0.20 0.02 0.37 0.00 NEaar 2391b BEBto4b England Barling, Essex organic silty clay TQ 935899 51º 34' 27.24" 000º 47' 33.78" opercula Bithynia tentaculata 2 0.76 0.00 0.35 0.00 0.88 0.00 0.47 0.00 0.28 0.01 0.40 0.00 2 0.67 0.01 0.26 0.00 0.77 0.02 0.39 0.00 0.20 0.00 0.35 0.01 NEaar 1307b P6Bto1b England Purfleet Greenlands Shell Bed, mollusc sample 6 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.76 0.00 0.34 0.00 1.00 0.01 0.49 0.01 0.26 0.00 0.40 0.01 2 0.64 0.00 0.23 0.00 0.73 0.02 0.37 0.00 0.22 0.00 0.41 0.01 NEaar 1308b P6Bto2b England Purfleet Greenlands Shell Bed, mollusc sample 6 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.76 0.00 0.34 0.01 1.02 0.01 0.51 0.01 0.26 0.01 0.37 0.01 2 0.64 0.00 0.25 0.01 0.70 0.01 0.39 0.00 0.20 0.00 0.33 0.00 NEaar 1309b P6Bto3b England Purfleet Greenlands Shell Bed, mollusc sample 6 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.77 0.01 0.34 0.01 1.02 0.00 0.49 0.00 0.25 0.00 0.37 0.00 2 0.65 0.00 0.26 0.00 0.71 0.01 0.39 0.00 0.21 0.00 0.33 0.00 NEaar 1310b P6Bto4b England Purfleet Greenlands Shell Bed, mollusc sample 6 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.75 0.00 0.32 0.00 0.98 0.02 0.50 0.00 0.25 0.00 0.45 0.00 2 0.64 0.00 0.25 0.00 0.72 0.02 0.39 0.00 0.20 0.00 0.35 0.00 NEaar 1311b P6Bto5b England Purfleet Greenlands Shell Bed, mollusc sample 6 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.75 0.01 0.34 0.01 1.01 0.01 0.50 0.00 0.27 0.00 0.37 0.01 2 0.64 0.00 0.24 0.00 0.77 0.01 0.39 0.00 0.23 0.00 0.42 0.00 NEaar 1312b P6Bto6b England Purfleet Greenlands Shell Bed, mollusc sample 6 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.75 0.01 0.35 0.01 1.01 0.05 0.46 0.00 0.24 0.00 0.39 0.02 2 0.65 0.00 0.24 0.00 0.77 0.01 0.38 0.01 0.20 0.00 0.39 0.01 NEaar 1313b P6Bto7b England Purfleet Greenlands Shell Bed, mollusc sample 6 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.74 0.00 0.32 0.00 1.00 0.00 0.48 0.00 0.25 0.00 0.38 0.00 2 0.64 0.00 0.23 0.00 0.75 0.01 0.38 0.00 0.21 0.00 0.42 0.00 NEaar 1314b P6Bto8b England Purfleet Greenlands Shell Bed, mollusc sample 6 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.75 0.00 0.34 0.01 1.06 0.03 0.50 0.00 0.26 0.00 0.37 0.00 2 0.65 0.02 0.23 0.01 0.76 0.01 0.37 0.00 0.21 0.01 0.39 0.00 NEaar 1315b P6Bto9b England Purfleet Greenlands Shell Bed, mollusc sample 6 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.76 0.00 0.33 0.01 1.03 0.00 0.50 0.01 0.25 0.00 0.40 0.00 2 0.64 0.00 0.23 0.00 0.75 0.00 0.38 0.00 0.21 0.00 0.41 0.02 NEaar 1361b P6Bto10b England Purfleet Greenlands Shell Bed, mollusc sample 6 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 3 0.76 0.01 0.32 0.02 0.98 0.03 0.48 0.00 0.25 0.01 0.35 0.00 4 0.63 0.02 0.24 0.00 0.75 0.03 0.37 0.01 0.21 0.01 0.36 0.01 NEaar 1362b P6Bto11b England Purfleet Greenlands Shell Bed, mollusc sample 6 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 3 0.75 0.01 0.32 0.02 0.99 0.02 0.47 0.01 0.26 0.01 0.37 0.01 4 0.64 0.00 0.25 0.00 0.75 0.02 0.38 0.01 0.21 0.00 0.36 0.01 NEaar 1363b P6Bto12b England Purfleet Greenlands Shell Bed, mollusc sample 6 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 3 0.75 0.01 0.31 0.02 0.97 0.00 0.49 0.01 0.27 0.02 0.37 0.01 4 0.62 0.00 0.24 0.00 0.71 0.02 0.38 0.01 0.20 0.00 0.42 0.01 NEaar 1364b P6Bto13b England Purfleet Greenlands Shell Bed, mollusc sample 6 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 2 0.76 0.03 0.37 0.01 0.90 0.03 0.46 0.01 0.25 0.01 0.34 0.00 4 0.64 0.01 0.28 0.01 0.71 0.02 0.38 0.01 0.21 0.01 0.36 0.02 NEaar 1365b P6Bto14b England Purfleet Greenlands Shell Bed, mollusc sample 6 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 3 0.76 0.01 0.32 0.03 1.00 0.02 0.47 0.00 0.25 0.01 0.35 0.00 3 0.65 0.00 0.25 0.01 0.78 0.01 0.40 0.01 0.21 0.01 0.36 0.01 NEaar 1366b P6Bto15b England Purfleet Greenlands Shell Bed, mollusc sample 6 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 3 0.76 0.01 0.33 0.02 1.00 0.03 0.48 0.00 0.28 0.01 0.34 0.00 3 0.65 0.02 0.25 0.01 0.77 0.02 0.38 0.00 0.23 0.02 0.38 0.00 NEaar 1367b P6Bto16b England Purfleet Greenlands Shell Bed, mollusc sample 6 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 3 0.77 0.01 0.32 0.03 0.99 0.01 0.48 0.01 0.26 0.01 0.36 0.01 3 0.65 0.02 0.24 0.01 0.73 0.02 0.38 0.01 0.21 0.00 0.38 0.02 NEaar 1368b P6Bto17b England Purfleet Greenlands Shell Bed, mollusc sample 6 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 3 0.76 0.02 0.32 0.03 0.96 0.01 0.48 0.00 0.26 0.01 0.37 0.01 3 0.67 0.26 0.02 0.73 0.03 0.40 0.00 0.22 0.01 0.36 0.03 NEaar 1369b P6Bto18b England Purfleet Greenlands Shell Bed, mollusc sample 6 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 3 0.76 0.03 0.32 0.03 0.93 0.02 0.48 0.00 0.25 0.00 0.40 0.01 3 0.63 0.02 0.22 0.00 0.67 0.01 0.36 0.01 0.19 0.01 0.37 0.02 NEaar 1370b P6Bto19b England Purfleet Greenlands Shell Bed, mollusc sample 6 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 3 0.77 0.02 0.33 0.04 1.00 0.02 0.48 0.01 0.26 0.01 0.33 0.01 3 0.65 0.02 0.24 0.01 0.75 0.03 0.39 0.02 0.21 0.00 0.33 0.01 NEaar 1371b P6Bto20b England Purfleet Greenlands Shell Bed, mollusc sample 6 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 3 0.76 0.00 0.33 0.04 0.97 0.01 0.47 0.02 0.25 0.00 0.37 0.03 3 0.63 0.02 0.25 0.01 0.72 0.02 0.39 0.00 0.21 0.00 0.35 0.02 NEaar 1372b P6Bto21b England Purfleet Greenlands Shell Bed, mollusc sample 6 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 3 0.75 0.00 0.35 0.01 0.98 0.01 0.47 0.00 0.25 0.00 0.38 0.01 3 0.64 0.01 0.25 0.01 0.76 0.03 0.38 0.01 0.21 0.00 0.38 0.01 NEaar 1373b P6Bto22b England Purfleet Greenlands Shell Bed, mollusc sample 6 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 1 0.77 0.32 1.00 0.49 0.28 0.33 3 0.65 0.01 0.24 0.01 0.77 0.02 0.39 0.01 0.21 0.01 0.37 0.01 NEaar 1374b P6Bto23b England Purfleet Greenlands Shell Bed, mollusc sample 6 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 1 0.78 0.37 1.00 0.51 0.28 0.29 3 0.65 0.00 0.27 0.01 0.68 0.01 0.39 0.00 0.21 0.00 0.35 0.01 NEaar 1375b P6Bto24b England Purfleet Greenlands Shell Bed, mollusc sample 6 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 1 0.76 0.34 1.00 0.48 0.27 0.36 3 0.64 0.01 0.24 0.00 0.75 0.01 0.37 0.01 0.22 0.01 0.39 0.00 NEaar 1376b P6Bto25b England Purfleet Greenlands Shell Bed, mollusc sample 6 TQ 568785 51º 28' 59.53" 000º 15' 30.44" opercula Bithynia tentaculata 1 0.57 0.39 0.90 0.59 0.43 0.33 3 0.64 0.00 0.25 0.01 0.71 0.01 0.37 0.00 0.21 0.01 0.39 0.01 extreme outlier in FAA to THAA plot, not included in averages NEaar 3746b Sh13.9Bto1b England Shoeburyness borehole, 13.9m TQ 9340 8545 51º 32' 03.47" 000º 47' 19.78" opercula Bithynia tentaculata 2 0.77 0.01 0.37 0.01 0.90 0.00 0.50 0.00 0.28 0.00 0.35 0.00 2 0.63 0.00 0.26 0.00 0.62 0.02 0.39 0.00 0.19 0.00 0.34 0.00 NEaar 3747b Sh13.9Bto2b England Shoeburyness borehole, 13.9m TQ 9340 8545 51º 32' 03.47" 000º 47' 19.78" opercula Bithynia tentaculata 2 0.76 0.00 0.34 0.03 0.79 0.09 0.49 0.00 0.27 0.01 0.38 0.02 2 0.65 0.00 0.27 0.00 0.69 0.00 0.41 0.00 0.21 0.00 0.36 0.00 NEaar 3748b Sh13.9Bto3b England Shoeburyness borehole, 13.9m TQ 9340 8545 51º 32' 03.47" 000º 47' 19.78" opercula Bithynia tentaculata 2 0.77 0.00 0.36 0.00 0.95 0.01 0.49 0.00 0.26 0.00 0.32 0.00 2 0.66 0.00 0.27 0.00 0.74 0.01 0.40 0.00 0.21 0.00 0.31 0.00 NEaar 3831b Sh13.9Bto4b England Shoeburyness borehole, 13.9m TQ 9340 8545 51º 32' 03.47" 000º 47' 19.78" opercula Bithynia tentaculata 2 0.75 0.01 0.35 0.00 0.96 0.01 0.49 0.01 0.30 0.00 0.34 0.01 2 0.63 0.00 0.26 0.00 0.66 0.00 0.39 0.00 0.20 0.00 0.35 0.01 NEaar 3132b MeSBto1b England Shoeburyness Channel TQ 9340 8545 51º 32' 03.47" 000º 47' 19.78" opercula Bithynia tentaculata 2 0.77 0.00 0.24 0.00 1.01 0.01 0.48 0.00 0.29 0.00 0.34 0.00 2 0.64 0.00 0.24 0.00 0.63 0.02 0.37 0.00 0.20 0.01 0.33 0.01 NEaar 1459b GBto1b England Grays From sediment adhering to upper premolar of S. kirchbirgensis (NHM) TQ 6078 51º 28' 40.13" 000º 18' 15.41" opercula Bithynia tentaculata 2 0.75 0.01 0.33 0.00 1.04 0.02 0.44 0.00 0.22 0.04 0.40 0.01 2 0.70 0.01 0.25 0.01 0.78 0.02 0.41 0.01 0.20 0.00 0.38 0.01 NEaar 3057b GBto2b England Grays From sediment adhering to upper premolar of S. kirchbirgensis (NHM) TQ 6078 51º 28' 40.13" 000º 18' 15.41" opercula Bithynia tentaculata 2 0.76 0.01 0.26 0.01 1.02 0.01 0.47 0.01 0.27 0.00 0.32 0.01 2 0.68 0.00 0.24 0.00 0.70 0.02 0.39 0.00 0.20 0.00 0.28 0.04 NEaar 5131b MTtBto1b England Marks Tey near top TL 912242 51º 52' 59.12" 000º 46' 42.24" opercula Bithynia tentaculata 2 0.80 0.00 0.30 0.01 1.06 0.00 0.45 0.00 0.27 0.00 0.26 0.01 2 0.76 0.00 0.29 0.00 0.92 0.03 0.40 0.01 0.22 0.01 0.24 0.01 NEaar 5132b MTtBto2b England Marks Tey near top TL 912242 51º 52' 59.12" 000º 46' 42.24" opercula Bithynia tentaculata 2 0.80 0.01 0.27 0.01 1.01 0.03 0.47 0.00 0.28 0.00 0.26 0.01 2 0.72 0.00 0.24 0.01 0.77 0.00 0.39 0.00 0.22 0.00 0.24 0.01 NEaar 3949b BPkBto1b England Belhus Park M25 BP18 TQ 575811 51º 30' 22.94" 000º 16' 10.88" opercula Bithynia tentaculata 2 0.78 0.00 0.37 0.01 1.04 0.01 0.49 0.01 0.28 0.00 0.32 0.00 2 0.64 0.00 0.26 0.00 0.73 0.00 0.40 0.00 0.21 0.01 0.30 0.01 NEaar 3951b BPkBto2b England Belhus Park M25 BP18 TQ 575811 51º 30' 22.94" 000º 16' 10.88" opercula Bithynia tentaculata 2 0.77 0.01 0.37 0.00 1.03 0.01 0.50 0.00 0.29 0.00 0.32 0.02 2 0.65 0.00 0.26 0.00 0.69 0.02 0.40 0.00 0.22 0.01 0.32 0.01 NEaar 3952b BPkBto3b England Belhus Park M25 BP18 TQ 575811 51º 30' 22.94" 000º 16' 10.88" opercula Bithynia tentaculata 3 0.77 0.01 0.35 0.01 1.06 0.02 0.49 0.01 0.28 0.00 0.31 0.01 2 0.63 0.00 0.24 0.00 0.70 0.01 0.39 0.00 0.21 0.00 0.31 0.01 NEaar 3953b BPkBto4b England Belhus Park M25 BP18 TQ 575811 51º 30' 22.94" 000º 16' 10.88" opercula Bithynia tentaculata 2 0.77 0.01 0.37 0.00 1.03 0.01 0.47 0.01 0.26 0.00 0.29 0.01 2 0.68 0.00 0.28 0.01 0.76 0.01 0.41 0.00 0.22 0.00 0.29 0.00 NEaar 4922b TrBto1b England Trimingham lake bed, 16/03/2008 TG 267395 52º 54' 16.97" 001º 22' 17.19" opercula Bithynia tentaculata 2 0.75 0.01 0.25 0.00 1.01 0.03 0.46 0.01 0.28 0.00 0.32 0.00 2 0.64 0.00 0.22 0.00 0.52 0.00 0.38 0.00 0.20 0.00 0.37 0.00 NEaar 4923b TrBto2b England Trimingham lake bed, 16/03/2008 TG 267395 52º 54' 16.97" 001º 22' 17.19" opercula Bithynia tentaculata 2 0.78 0.01 0.24 0.01 0.93 0.00 0.46 0.00 0.32 0.01 0.28 0.01 2 0.71 0.00 0.25 0.00 0.79 0.01 0.41 0.00 0.22 0.00 0.26 0.00 NEaar 4924b TrBto3b England Trimingham lake bed, 16/03/2008 TG 267395 52º 54' 16.97" 001º 22' 17.19" opercula Bithynia tentaculata 2 0.74 0.00 0.28 0.01 1.02 0.00 0.46 0.00 0.28 0.00 0.33 0.00 2 0.66 0.00 0.25 0.00 0.72 0.00 0.40 0.00 0.21 0.00 0.31 0.01 NEaar 4925b TrBto4b England Trimingham lake bed, 16/03/2008 TG 267395 52º 54' 16.97" 001º 22' 17.19" opercula Bithynia tentaculata 2 0.78 0.00 0.25 0.01 1.01 0.02 0.48 0.02 0.32 0.00 0.24 0.00 2 0.69 0.00 0.22 0.00 0.78 0.01 0.38 0.01 0.21 0.00 0.26 0.00 NEaar 4926b TrBto5b England Trimingham lake bed, 16/03/2008 TG 267395 52º 54' 16.97" 001º 22' 17.19" opercula Bithynia tentaculata 2 0.74 0.00 0.27 0.02 1.03 0.00 0.46 0.01 0.27 0.00 0.34 0.00 2 0.68 0.00 0.26 0.00 0.77 0.00 0.41 0.00 0.23 0.00 0.31 0.00 NEaar 4964b TrBto6b England Trimingham lake bed, 16/03/2008 TG 267395 52º 54' 16.97" 001º 22' 17.19" opercula Bithynia tentaculata 2 0.79 0.00 0.29 0.01 1.04 0.00 0.48 0.00 0.29 0.00 0.26 0.00 2 0.70 0.01 0.25 0.00 0.80 0.00 0.42 0.00 0.21 0.00 0.25 0.01 NEaar 4965b TrBto7b England Trimingham lake bed, 16/03/2008 TG 267395 52º 54' 16.97" 001º 22' 17.19" opercula Bithynia tentaculata 2 0.74 0.00 0.28 0.01 1.00 0.01 0.47 0.00 0.28 0.00 0.32 0.01 NEaar 4966b TrBto8b England Trimingham lake bed, 16/03/2008 TG 267395 52º 54' 16.97" 001º 22' 17.19" opercula Bithynia tentaculata 2 0.75 0.00 0.29 0.01 1.00 0.00 0.47 0.01 0.28 0.01 0.33 0.00 2 0.66 0.00 0.25 0.00 0.71 0.00 0.40 0.00 0.21 0.00 0.28 0.00 NEaar 4967b TrBto9b England Trimingham lake bed, 16/03/2008 TG 267395 52º 54' 16.97" 001º 22' 17.19" opercula Bithynia tentaculata 2 0.78 0.00 0.28 0.01 1.03 0.02 0.47 0.00 0.27 0.00 0.27 0.01 2 0.67 0.00 0.24 0.00 0.76 0.00 0.40 0.00 0.20 0.00 0.27 0.00 NEaar 4968b TrBto10b England Trimingham lake bed, 16/03/2008 TG 267395 52º 54' 16.97" 001º 22' 17.19" opercula Bithynia tentaculata 2 0.78 0.00 0.34 0.00 0.88 0.01 0.44 0.01 0.30 0.01 0.25 0.00 NEaar 4970b TrBto11b England Trimingham lake bed, 16/03/2008 TG 267395 52º 54' 16.97" 001º 22' 17.19" opercula Bithynia tentaculata 2 0.76 0.00 0.29 0.01 0.99 0.01 0.50 0.00 0.30 0.01 0.28 0.00 2 0.65 0.00 0.26 0.01 0.72 0.01 0.41 0.00 0.21 0.00 0.30 0.00 NEaar 4971b TrBto12b England Trimingham lake bed, 16/03/2008 TG 267395 52º 54' 16.97" 001º 22' 17.19" opercula Bithynia tentaculata 2 0.73 0.00 0.29 0.01 0.97 0.00 0.45 0.01 0.27 0.01 0.34 0.01 2 0.66 0.00 0.26 0.00 0.75 0.01 0.40 0.00 0.21 0.00 0.31 0.00 NEaar 4972b TrBto13b England Trimingham lake bed, 16/03/2008 TG 267395 52º 54' 16.97" 001º 22' 17.19" opercula Bithynia tentaculata 2 0.77 0.01 0.35 0.01 0.91 0.01 0.46 0.01 0.31 0.01 0.29 0.00 2 0.67 0.00 0.26 0.00 0.73 0.01 0.41 0.00 0.24 0.00 0.24 0.03 NEaar 3143b Ho64Bto1b England Hoxne 2001 (64), 2-8mm, Stratum B2 TM 175767 52º 20' 41.22" 001º 11' 36.66" opercula Bithynia tentaculata 2 0.74 0.01 0.33 0.00 1.03 0.00 0.43 0.01 0.26 0.00 0.31 0.01 2 0.69 0.00 0.30 0.00 0.80 0.01 0.39 0.00 0.22 0.01 0.31 0.00 NEaar 3144b Ho64Bto2b England Hoxne 2001 (64), 2-8mm, Stratum B2 TM 175767 52º 20' 41.22" 001º 11' 36.66" opercula Bithynia tentaculata 2 0.75 0.00 0.35 0.00 1.03 0.01 0.46 0.00 0.29 0.00 0.30 0.00 2 0.69 0.00 0.31 0.00 0.81 0.00 0.40 0.00 0.22 0.00 0.32 0.00 NEaar 3145b Ho64Bto3b England Hoxne 2001 (64), 2-8mm, Stratum B2 TM 175767 52º 20' 41.22" 001º 11' 36.66" opercula Bithynia tentaculata 2 0.78 0.00 0.33 0.01 1.04 0.00 0.50 0.01 0.29 0.00 0.29 0.00 2 0.70 0.00 0.31 0.00 0.78 0.01 0.43 0.00 0.24 0.00 0.29 0.00 NEaar 3146b Ho64Bto4b England Hoxne 2001 (64), 2-8mm, Stratum B2 TM 175767 52º 20' 41.22" 001º 11' 36.66" opercula Bithynia tentaculata 2 0.75 0.00 0.30 0.00 1.01 0.00 0.44 0.00 0.27 0.00 0.31 0.00 2 0.68 0.00 0.28 0.00 0.76 0.00 0.38 0.00 0.21 0.00 0.30 0.00 NEaar 2668b BaBtro1b England Barnham BEF92, Area II Spit 6 (82) TL 875787 52º 22' 25.76" 000º 45' 17.08" opercula Bithynia troschelii 2 0.81 0.00 0.41 0.01 1.02 0.01 0.50 0.00 0.28 0.00 0.21 0.01 2 0.72 0.00 0.30 0.00 0.73 0.01 0.42 0.00 0.22 0.00 0.22 0.00 NEaar 2669b BaBtro2b England Barnham BEF92, Area II Spit 6 (82) TL 875787 52º 22' 25.76" 000º 45' 17.08" opercula Bithynia troschelii 2 0.79 0.01 0.43 0.00 1.04 0.01 0.49 0.00 0.28 0.01 0.21 0.01 NEaar 2670b BaBtro3b England Barnham BEF92, Area II Spit 6 (82) TL 875787 52º 22' 25.76" 000º 45' 17.08" opercula Bithynia troschelii 2 0.79 0.00 0.36 0.04 1.07 0.02 0.49 0.00 0.26 0.01 0.23 0.00 2 0.69 0.00 0.26 0.00 0.69 0.02 0.39 0.01 0.21 0.01 0.23 0.00 NEaar 1573b E96Bto1b England Elveden ELV 96 Sample 36, 60-70 TL 809804 52º 23' 28.72" 000º 39' 31.72" opercula Bithynia tentaculata 2 0.76 0.00 0.41 0.01 0.84 0.02 0.46 0.00 0.25 0.00 0.25 0.00 2 0.70 0.00 0.28 0.00 0.80 0.02 0.40 0.00 0.20 0.00 0.23 0.00 NEaar 1574b E96Bto2b England Elveden ELV 96 Sample 36, 60-70 TL 809804 52º 23' 28.72" 000º 39' 31.72" opercula Bithynia tentaculata 2 0.79 0.01 0.40 0.01 1.07 0.01 0.47 0.00 0.24 0.00 0.22 0.00 2 0.74 0.00 0.29 0.00 0.94 0.00 0.42 0.00 0.20 0.00 0.21 0.00 NEaar 1568b E95Bto1b England Elveden ELV 95 (5)-(4) TL 809804 52º 23' 28.72" 000º 39' 31.72" opercula Bithynia tentaculata 2 0.80 0.00 0.39 0.00 1.07 0.01 0.47 0.00 0.25 0.01 0.24 0.01 2 0.67 0.00 0.29 0.00 0.72 0.00 0.40 0.00 0.20 0.00 0.26 0.00 NEaar 1569b E95Bto2b England Elveden ELV 95 (5)-(4) TL 809804 52º 23' 28.72" 000º 39' 31.72" opercula Bithynia tentaculata 2 0.77 0.01 0.40 0.00 1.00 0.00 0.47 0.00 0.26 0.00 0.24 0.00 2 0.70 0.00 0.29 0.00 0.81 0.02 0.41 0.00 0.21 0.00 0.25 0.00 NEaar 1570b E95Bto3b England Elveden ELV 95 (5)-(4) TL 809804 52º 23' 28.72" 000º 39' 31.72" opercula Bithynia tentaculata 2 0.78 0.01 0.40 0.00 1.04 0.03 0.48 0.00 0.26 0.00 0.23 0.00 2 0.72 0.00 0.31 0.00 0.81 0.04 0.43 0.00 0.22 0.00 0.23 0.00 NEaar 1571b E95Bto4b England Elveden ELV 95 (5)-(4) TL 809804 52º 23' 28.72" 000º 39' 31.72" opercula Bithynia tentaculata 2 0.79 0.02 0.41 0.01 1.03 0.03 0.47 0.00 0.26 0.00 0.23 0.00 2 0.72 0.01 0.29 0.00 0.85 0.01 0.41 0.00 0.22 0.02 0.24 0.00 NEaar 1572b E95Bto5b England Elveden ELV 95 (5)-(4) TL 809804 52º 23' 28.72" 000º 39' 31.72" opercula Bithynia tentaculata 2 0.78 0.00 0.42 0.00 1.03 0.00 0.48 0.00 0.26 0.00 0.23 0.00 2 0.72 0.01 0.28 0.00 0.84 0.01 0.40 0.00 0.20 0.00 0.23 0.00 NEaar 1448b SwBto1b England Swanscombe Lower Loam TQ 595745 51º 26' 40.76" 000º 17' 53.85" opercula Bithynia tentaculata 2 0.76 0.00 0.37 0.00 1.01 0.00 0.49 0.02 0.31 0.01 0.30 0.00 2 0.64 0.00 0.27 0.00 0.62 0.02 0.40 0.00 0.23 0.01 0.31 0.01 NEaar 1449b SwBto2b England Swanscombe Lower Loam TQ 595745 51º 26' 40.76" 000º 17' 53.85" opercula Bithynia tentaculata 2 0.75 0.00 0.37 0.00 0.92 0.04 0.47 0.01 0.32 0.00 0.28 0.00 2 0.66 0.00 0.30 0.00 0.82 0.00 0.44 0.01 0.29 0.01 0.29 0.00 NEaar 1450b SwBto3b England Swanscombe Lower Loam TQ 595745 51º 26' 40.76" 000º 17' 53.85" opercula Bithynia tentaculata 2 0.75 0.01 0.38 0.01 0.95 0.03 0.49 0.01 0.31 0.00 0.29 0.01 3 0.65 0.00 0.28 0.00 0.66 0.03 0.41 0.00 0.22 0.30 0.01 NEaar 1451b SwBto4b England Swanscombe Lower Loam TQ 595745 51º 26' 40.76" 000º 17' 53.85" opercula Bithynia tentaculata 2 0.75 0.01 0.39 0.00 0.89 0.01 0.49 0.01 0.32 0.00 0.28 0.00 2 0.69 0.01 0.29 0.00 0.68 0.01 0.42 0.00 0.21 0.00 0.30 0.00 NEaar 3058b SwBto5b England Swanscombe Lower Loam TQ 595745 51º 26' 40.76" 000º 17' 53.85" opercula Bithynia tentaculata 2 0.78 0.01 0.30 0.01 0.98 0.02 0.51 0.00 0.31 0.00 0.25 0.01 2 0.67 0.00 0.28 0.00 0.64 0.02 0.42 0.01 0.23 0.00 0.24 0.01 NEaar 3059b SwBto6b England Swanscombe Lower Loam TQ 595745 51º 26' 40.76" 000º 17' 53.85" opercula Bithynia tentaculata 2 0.78 0.01 0.31 0.01 0.95 0.02 0.51 0.01 0.32 0.00 0.23 0.00 2 0.67 0.00 0.28 0.00 0.62 0.04 0.41 0.01 0.23 0.00 0.19 0.07 NEaar 0502b BaBto1-2b England Barnham BEF93, Pit 4 128-118cm TL 875787 52º 22' 25.76" 000º 45' 17.08" opercula Bithynia tentaculata 2 0.75 0.02 0.32 0.00 1.01 0.00 0.53 0.01 0.28 0.00 0.32 0.00 2 0.68 0.01 0.29 0.00 0.73 0.02 0.45 0.01 0.23 0.01 0.32 0.00 NEaar 0504b BaBto3-4b England Barnham BEF93, Pit 4 128-118cm TL 875787 52º 22' 25.76" 000º 45' 17.08" opercula Bithynia tentaculata 2 0.76 0.01 0.31 0.00 1.01 0.01 0.52 0.01 0.28 0.00 0.30 0.00 2 0.67 0.00 0.29 0.00 0.71 0.00 0.45 0.00 0.22 0.01 0.30 0.00 NEaar 2448b BaBto1-2ib England Barnham BEF93, Pit 4 128-118cm TL 875787 52º 22' 25.76" 000º 45' 17.08" opercula Bithynia tentaculata 2 0.75 0.01 0.37 0.00 1.02 0.00 0.49 0.00 0.26 0.01 0.36 0.00 2 0.66 0.00 0.29 0.00 0.69 0.02 0.40 0.00 0.18 0.00 0.34 0.00 NEaar 2449b BaBto1-2iib England Barnham BEF93, Pit 4 128-118cm TL 875787 52º 22' 25.76" 000º 45' 17.08" opercula Bithynia tentaculata 2 0.77 0.00 0.37 0.00 1.04 0.00 0.48 0.00 0.26 0.00 0.34 0.00 2 0.67 0.00 0.30 0.00 0.75 0.02 0.42 0.00 0.21 0.00 0.34 0.01 NEaar 2450b BaBto3-4ib England Barnham BEF93, Pit 4 128-118cm TL 875787 52º 22' 25.76" 000º 45' 17.08" opercula Bithynia tentaculata 2 0.75 0.01 0.38 0.00 0.99 0.03 0.48 0.00 0.24 0.00 0.37 0.00 2 0.66 0.00 0.30 0.00 0.71 0.02 0.40 0.00 0.19 0.00 0.33 0.00 NEaar 2451b BaBto3-4iib England Barnham BEF93, Pit 4 128-118cm TL 875787 52º 22' 25.76" 000º 45' 17.08" opercula Bithynia tentaculata 2 0.75 0.01 0.38 0.01 0.99 0.06 0.50 0.02 0.28 0.01 0.31 0.02 2 0.67 0.00 0.29 0.00 0.72 0.01 0.40 0.01 0.20 0.00 0.31 0.00 NEaar 1227b WBto1b England Woodston Bulk B TL 189956 52º 32' 41.61" -000º 14' 47.21" opercula Bithynia tentaculata 2 0.77 0.00 0.40 0.02 1.02 0.03 0.54 0.01 0.30 0.01 0.28 0.01 2 0.66 0.01 0.29 0.01 0.68 0.01 0.43 0.00 0.23 0.00 0.29 0.00 NEaar 1228b WBto2b England Woodston Bulk B TL 189956 52º 32' 41.61" -000º 14' 47.21" opercula Bithynia tentaculata 2 0.76 0.00 0.42 0.02 0.99 0.03 0.52 0.02 0.28 0.01 0.29 0.00 2 0.66 0.00 0.31 0.00 0.71 0.02 0.42 0.01 0.24 0.01 0.31 0.00 NEaar 1229b WBto3b England Woodston Bulk B TL 189956 52º 32' 41.61" -000º 14' 47.21" opercula Bithynia tentaculata 2 0.78 0.00 0.40 0.01 1.01 0.00 0.54 0.00 0.29 0.00 0.29 0.00 2 0.65 0.00 0.29 0.00 0.65 0.02 0.42 0.01 0.22 0.00 0.29 0.00 NEaar 1230b WBto4b England Woodston Bulk B TL 189956 52º 32' 41.61" -000º 14' 47.21" opercula Bithynia tentaculata 2 0.78 0.01 0.41 0.00 1.01 0.01 0.54 0.01 0.31 0.00 0.29 0.00 2 0.66 0.01 0.31 0.01 0.72 0.05 0.42 0.00 0.23 0.00 0.31 0.01 NEaar 0498b HoBto1b England Hoxne 2000, Sq1, Spit 5 (40-50) Sample 5, Stratum E TM 175767 52º 20' 41.22" 001º 11' 36.66" opercula Bithynia tentaculata 2 0.77 0.00 0.37 0.00 0.74 0.00 0.48 0.00 0.26 0.00 0.36 0.00 2 0.69 0.00 0.29 0.00 0.74 0.00 0.42 0.00 0.24 0.00 0.31 0.00 NEaar 0500b HoBto2-4b England Hoxne 2000, Sq1, Spit 5 (40-50) Sample 5, Stratum E TM 175767 52º 20' 41.22" 001º 11' 36.66" opercula Bithynia tentaculata 2 0.78 0.00 0.37 0.03 0.99 0.00 0.53 0.00 0.29 0.01 0.28 0.00 2 0.69 0.00 0.30 0.00 0.75 0.00 0.44 0.00 0.23 0.00 0.28 0.00 NEaar 2446b HoBto2-4ib England Hoxne 2000, Sq1, Spit 5 (40-50) Sample 5, Stratum E TM 175767 52º 20' 41.22" 001º 11' 36.66" opercula Bithynia tentaculata 2 0.78 0.00 0.37 0.00 1.05 0.01 0.48 0.00 0.27 0.00 0.30 0.00 2 0.69 0.00 0.28 0.00 0.75 0.01 0.41 0.00 0.22 0.00 0.29 0.00 NEaar 2447b HoBto2-4iib England Hoxne 2000, Sq1, Spit 5 (40-50) Sample 5, Stratum E TM 175767 52º 20' 41.22" 001º 11' 36.66" opercula Bithynia tentaculata 2 0.76 0.01 0.40 0.00 1.04 0.00 0.48 0.00 0.29 0.00 0.30 0.00 2 0.69 0.00 0.29 0.00 0.75 0.01 0.41 0.00 0.22 0.01 0.28 0.01 NEaar 0970b BPBto1b England Beeches Pit Bed 7, Cutting 2 (98 series) TL 798719 52º 18' 55.19" 000º 38' 17.19" opercula Bithynia tentaculata 2 0.79 0.00 0.38 0.00 1.01 0.00 0.49 0.00 0.29 0.00 0.30 0.01 2 0.72 0.00 0.32 0.00 0.80 0.02 0.42 0.00 0.26 0.00 0.30 0.01 NEaar 0971b BPBto2b England Beeches Pit Bed 7, Cutting 2 (98 series) TL 798719 52º 18' 55.19" 000º 38' 17.19" opercula Bithynia tentaculata 2 0.77 0.00 0.37 0.02 0.95 0.01 0.49 0.01 0.28 0.01 0.30 0.00 2 0.72 0.00 0.32 0.00 0.83 0.01 0.43 0.01 0.26 0.00 0.30 0.01 NEaar 0972b BPBto3b England Beeches Pit Bed 7, Cutting 2 (98 series) TL 798719 52º 18' 55.19" 000º 38' 17.19" opercula Bithynia tentaculata 2 0.78 0.01 0.37 0.01 1.00 0.05 0.49 0.00 0.26 0.00 0.29 0.01 2 0.70 0.00 0.31 0.00 0.77 0.00 0.42 0.01 0.23 0.01 0.28 0.00 NEaar 0973b BPBto4b England Beeches Pit Bed 7, Cutting 2 (98 series) TL 798719 52º 18' 55.19" 000º 38' 17.19" opercula Bithynia tentaculata 2 0.77 0.01 0.35 0.00 0.98 0.03 0.48 0.00 0.26 0.00 0.29 0.00 2 0.70 0.00 0.31 0.00 0.76 0.00 0.42 0.00 0.24 0.00 0.29 0.00 NEaar 2650b DPBtro1b England Dierden's Pit, Ingress Vale 1975 BM Excavation (coll. R.C. Preece) TQ 595748 51º 26' 57.13" 000º 17' 44.31" opercula Bithynia troschelii 2 0.80 0.01 0.40 0.00 1.04 0.02 0.51 0.00 0.27 0.02 0.18 0.01 2 0.72 0.00 0.29 0.00 0.77 0.00 0.43 0.00 0.21 0.00 0.19 0.00 NEaar 2651b DPBtro2b England Dierden's Pit, Ingress Vale 1975 BM Excavation (coll. R.C. Preece) TQ 595748 51º 26' 57.13" 000º 17' 44.31" opercula Bithynia troschelii 2 0.81 0.00 0.36 0.01 1.07 0.02 0.52 0.00 0.27 0.01 0.20 0.02 2 0.70 0.01 0.27 0.00 0.68 0.01 0.42 0.01 0.22 0.02 0.19 0.01 NEaar 3147b Ho50Bto1b England Hoxne 2001 (50), 2-8mm, Stratum B2 TM 175767 52º 20' 41.22" 001º 11' 36.66" opercula Bithynia tentaculata 2 0.75 0.01 0.34 0.00 1.03 0.01 0.44 0.01 0.26 0.00 0.30 0.01 2 0.71 0.00 0.33 0.00 0.83 0.00 0.42 0.00 0.24 0.00 0.29 0.01 NEaar 3148b Ho50Bto2b England Hoxne 2001 (50), 2-8mm, Stratum B2 TM 175767 52º 20' 41.22" 001º 11' 36.66" opercula Bithynia tentaculata 2 0.77 0.00 0.34 0.00 1.01 0.03 0.50 0.00 0.30 0.00 0.29 0.00 2 0.70 0.00 0.32 0.00 0.78 0.00 0.45 0.00 0.26 0.00 0.29 0.00 NEaar 3149b Ho50Bto3b England Hoxne 2001 (50), 2-8mm, Stratum B2 TM 175767 52º 20' 41.22" 001º 11' 36.66" opercula Bithynia tentaculata 2 0.76 0.01 0.33 0.01 1.03 0.00 0.48 0.00 0.27 0.00 0.30 0.00 4 0.68 0.00 0.31 0.00 0.75 0.01 0.42 0.00 0.22 0.00 0.30 0.00 NEaar 3150b Ho50Bto4b England Hoxne 2001 (50), 2-8mm, Stratum B2 TM 175767 52º 20' 41.22" 001º 11' 36.66" opercula Bithynia tentaculata 2 0.77 0.00 0.32 0.00 0.77 0.00 0.50 0.00 0.29 0.00 0.31 0.00 2 0.70 0.00 0.31 0.01 0.69 0.00 0.44 0.01 0.24 0.00 0.29 0.00 NEaar 2041b EbABto1b England Southfleet Road ARC 342 WO2 (40070) Sample <40162> TQ 615735 51º 26' 08.55" 000º 19' 07.35" opercula Bithynia tentaculata 2 0.80 0.01 0.33 0.01 1.02 0.01 0.52 0.00 0.33 0.00 0.29 0.02 2 0.65 0.00 0.29 0.00 0.59 0.01 0.42 0.00 0.21 0.00 0.31 0.00 NEaar 2042b EbABto2b England Southfleet Road ARC 342 WO2 (40070) Sample <40162> TQ 615735 51º 26' 08.55" 000º 19' 07.35" opercula Bithynia tentaculata 2 0.79 0.00 0.34 0.00 1.02 0.03 0.51 0.00 0.30 0.00 0.28 0.00 2 0.67 0.00 0.30 0.00 0.77 0.01 0.42 0.00 0.21 0.00 0.29 0.00 NEaar 2043b EbABto3b England Southfleet Road ARC 342 WO2 (40070) Sample <40162> TQ 615735 51º 26' 08.55" 000º 19' 07.35" opercula Bithynia tentaculata 2 0.78 0.01 0.36 0.00 1.01 0.01 0.50 0.00 0.29 0.00 0.26 0.02 2 0.68 0.00 0.32 0.00 0.78 0.00 0.44 0.00 0.23 0.00 0.25 0.00 NEaar 2044b EbABto4b England Southfleet Road ARC 342 WO2 (40070) Sample <40162> TQ 615735 51º 26' 08.55" 000º 19' 07.35" opercula Bithynia tentaculata 2 0.77 0.00 0.42 0.00 1.04 0.01 0.52 0.00 0.28 0.00 0.28 0.00 2 0.68 0.00 0.30 0.00 0.79 0.00 0.43 0.00 0.22 0.01 0.27 0.00 NEaar 2045b EbABto5b England Southfleet Road ARC 342 WO2 (40070) Sample <40162> TQ 615735 51º 26' 08.55" 000º 19' 07.35" opercula Bithynia tentaculata 2 0.77 0.00 0.43 0.00 1.03 0.01 0.53 0.01 0.29 0.00 0.28 0.00 2 0.70 0.00 0.30 0.00 0.77 0.00 0.44 0.00 0.23 0.00 0.27 0.00 NEaar 2046b EbABto6b England Southfleet Road ARC 342 WO2 (40070) Sample <40162> TQ 615735 51º 26' 08.55" 000º 19' 07.35" opercula Bithynia tentaculata 2 0.78 0.00 0.44 0.00 1.02 0.00 0.54 0.00 0.32 0.00 0.26 0.00 2 0.69 0.00 0.32 0.00 0.68 0.02 0.42 0.00 0.21 0.00 0.27 0.00 NEaar 2047b EbABto7b England Southfleet Road ARC 342 WO2 (40070) Sample <40162> TQ 615735 51º 26' 08.55" 000º 19' 07.35" opercula Bithynia tentaculata 2 0.77 0.00 0.42 0.00 1.02 0.00 0.51 0.00 0.28 0.00 0.27 0.00 2 0.69 0.00 0.29 0.00 0.69 0.00 0.42 0.00 0.21 0.00 0.26 0.00 NEaar 2646b DPBto1b England Dierden's Pit, Ingress Vale 1975 BM Excavation (coll. R.C. Preece) TQ 595748 51º 26' 57.13" 000º 17' 44.31" opercula Bithynia tentaculata 2 0.80 0.01 0.42 0.01 1.01 0.00 0.52 0.00 0.29 0.00 0.24 0.01 2 0.70 0.00 0.29 0.00 0.74 0.00 0.44 0.00 0.22 0.01 0.27 0.00 NEaar 2647b DPBto2b England Dierden's Pit, Ingress Vale 1975 BM Excavation (coll. R.C. Preece) TQ 595748 51º 26' 57.13" 000º 17' 44.31" opercula Bithynia tentaculata 2 0.78 0.01 0.38 0.00 0.77 0.00 0.54 0.00 0.29 0.00 0.29 0.01 2 0.69 0.00 0.29 0.00 0.71 0.01 0.45 0.00 0.21 0.01 0.28 0.00 NEaar 2648b DPBto3b England Dierden's Pit, Ingress Vale 1975 BM Excavation (coll. R.C. Preece) TQ 595748 51º 26' 57.13" 000º 17' 44.31" opercula Bithynia tentaculata 2 0.78 0.01 0.39 0.01 1.02 0.02 0.55 0.00 0.29 0.00 0.22 0.06 2 0.71 0.01 0.30 0.00 0.77 0.00 0.46 0.00 0.22 0.00 0.27 0.00 NEaar 2649b DPBto4b England Dierden's Pit, Ingress Vale 1975 BM Excavation (coll. R.C. Preece) TQ 595748 51º 26' 57.13" 000º 17' 44.31" opercula Bithynia tentaculata 3 0.77 0.00 0.66 0.09 0.51 0.05 0.24 0.01 0.20 0.01 2 0.71 0.00 0.29 0.00 0.72 0.00 0.44 0.01 0.20 0.00 0.24 0.01 NEaar 1464b ClBto1b England Clacton-on-Sea Trafalgar Road, deep piling and bottom levels from estuarine bed TM 171142 51º 47' 01.76" 001º 08' 52.49" opercula Bithynia tentaculata 2 0.78 0.00 0.36 0.00 1.03 0.02 0.53 0.00 0.32 0.00 0.29 0.00 2 0.65 0.00 0.26 0.00 0.56 0.01 0.45 0.00 0.24 0.00 0.32 0.01 NEaar 1465b ClBto2b England Clacton-on-Sea Trafalgar Road, deep piling and bottom levels from estuarine bed TM 171142 51º 47' 01.76" 001º 08' 52.49" opercula Bithynia tentaculata 2 0.78 0.00 0.39 0.00 1.04 0.00 0.54 0.00 0.31 0.00 0.28 0.00 2 0.71 0.00 0.26 0.02 0.81 0.01 0.47 0.01 0.28 0.01 0.31 0.00 NEaar 1466b ClBto3b England Clacton-on-Sea Trafalgar Road, deep piling and bottom levels from estuarine bed TM 171142 51º 47' 01.76" 001º 08' 52.49" opercula Bithynia tentaculata 2 0.77 0.00 0.37 0.01 0.87 0.07 0.51 0.03 0.34 0.00 0.28 0.01 2 0.70 0.00 0.26 0.00 0.71 0.06 0.46 0.01 0.23 0.01 0.31 0.01 NEaar 1467b ClBto4b England Clacton-on-Sea Trafalgar Road, deep piling and bottom levels from estuarine bed TM 171142 51º 47' 01.76" 001º 08' 52.49" opercula Bithynia tentaculata 2 0.79 0.00 0.42 0.00 0.99 0.00 0.55 0.01 0.33 0.00 0.25 0.00 2 0.71 0.01 0.27 0.01 0.73 0.07 0.48 0.01 0.26 0.00 0.28 0.02 NEaar 1176b WWBtro1b England Waverley Wood Bulk 1 SP 365715 52º 20' 23.93" -001º 27' 51.17" opercula Bithynia troschelii 2 0.80 0.00 0.51 0.01 1.02 0.02 0.57 0.00 0.35 0.00 0.20 0.00 2 0.70 0.01 0.37 0.00 0.85 0.00 0.49 0.00 0.29 0.00 0.21 0.01 NEaar 1177b WWBtro2b England Waverley Wood Bulk 1 SP 365715 52º 20' 23.93" -001º 27' 51.17" opercula Bithynia troschelii 2 0.80 0.00 0.48 0.01 0.97 0.01 0.56 0.00 0.34 0.00 0.22 0.00 2 0.72 0.00 0.36 0.00 0.85 0.00 0.49 0.00 0.28 0.00 0.20 0.00 NEaar 1178b WWBtro3b England Waverley Wood Bulk 1 SP 365715 52º 20' 23.93" -001º 27' 51.17" opercula Bithynia troschelii 2 0.80 0.00 0.53 0.01 0.98 0.01 0.56 0.00 0.34 0.00 0.20 0.00 2 0.71 0.00 0.35 0.00 0.80 0.00 0.48 0.01 0.27 0.00 0.21 0.00 NEaar 2036b WWBtro4b England Waverley Wood Bulk 1 SP 365715 52º 20' 23.93" -001º 27' 51.17" opercula Bithynia troschelii 2 0.83 0.00 0.54 0.00 1.04 0.00 0.57 0.00 0.34 0.00 0.20 0.00 2 0.63 0.00 0.35 0.00 0.65 0.00 0.43 0.00 0.22 0.00 0.26 0.00 extreme outlier in FAA to THAA plot, not included in averages NEaar 2037b WWBtro5b England Waverley Wood Bulk 1 SP 365715 52º 20' 23.93" -001º 27' 51.17" opercula Bithynia troschelii 2 0.81 0.00 0.52 0.00 1.06 0.00 0.57 0.01 0.35 0.00 0.21 0.00 2 0.70 0.00 0.36 0.00 0.80 0.00 0.48 0.00 0.27 0.00 0.22 0.00 NEaar 3319b WWBtro6b England Waverley Wood Bulk 1 SP 365715 52º 20' 23.93" -001º 27' 51.17" opercula Bithynia troschelii 2 0.82 0.00 0.41 0.01 1.07 0.01 0.57 0.00 0.37 0.01 0.20 0.00 2 0.74 0.00 0.38 0.00 0.90 0.01 0.52 0.00 0.30 0.00 0.20 0.00 NEaar 1716b SiUbto1b England Sidestrand Upper Unio Bed TG 2632 3989 52º 54' 30.15" 001º 21' 57.86" opercula Bithynia tentaculata 2 0.82 0.00 0.56 0.03 1.02 0.03 0.62 0.01 0.36 0.02 0.18 0.01 2 0.70 0.01 0.36 0.00 0.37 0.02 0.50 0.00 0.29 0.01 0.30 0.01 NEaar 1717b SiUbto2b England Sidestrand Upper Unio Bed TG 2632 3989 52º 54' 30.15" 001º 21' 57.86" opercula Bithynia tentaculata 2 0.81 0.00 0.55 0.00 0.98 0.00 0.62 0.02 0.34 0.00 0.20 0.01 2 0.72 0.01 0.38 0.00 0.73 0.01 0.54 0.00 0.30 0.00 0.22 0.00 NEaar 1718b SiUbto3b England Sidestrand Upper Unio Bed TG 2632 3989 52º 54' 30.15" 001º 21' 57.86" opercula Bithynia tentaculata 2 0.84 0.00 0.42 0.00 1.09 0.00 0.61 0.00 0.33 0.03 0.20 0.00 2 0.72 0.00 0.37 0.00 0.72 0.00 0.53 0.00 0.29 0.01 0.21 0.00 NEaar 1995b SiUBto4b England Sidestrand Upper Unio Bed TG 2632 3989 52º 54' 30.15" 001º 21' 57.86" opercula Bithynia tentaculata 2 0.81 0.00 0.54 0.01 1.08 0.00 0.63 0.01 0.36 0.01 0.18 0.02 2 0.73 0.00 0.42 0.00 0.78 0.00 0.57 0.00 0.31 0.01 0.20 0.00 NEaar 1997b SiUBto5b England Sidestrand Upper Unio Bed TG 2632 3989 52º 54' 30.15" 001º 21' 57.86" opercula Bithynia tentaculata 2 0.80 0.00 0.54 0.00 1.00 0.00 0.63 0.01 0.37 0.01 0.21 0.00 2 0.71 0.00 0.37 0.00 0.65 0.00 0.53 0.00 0.28 0.00 0.23 0.00 NEaar 1998b SiUBto6b England Sidestrand Upper Unio Bed TG 2632 3989 52º 54' 30.15" 001º 21' 57.86" opercula Bithynia tentaculata 2 0.81 0.00 0.52 0.00 1.05 0.00 0.65 0.01 0.37 0.00 0.19 0.00 2 0.72 0.00 0.36 0.00 0.73 0.00 0.52 0.00 0.27 0.01 0.21 0.00 NEaar 1999b SiUBto7b England Sidestrand Upper Unio Bed TG 2632 3989 52º 54' 30.15" 001º 21' 57.86" opercula Bithynia tentaculata 2 0.81 0.00 0.53 0.01 1.04 0.02 0.64 0.01 0.36 0.01 0.20 0.00 2 0.74 0.00 0.38 0.00 0.74 0.02 0.56 0.00 0.29 0.00 0.22 0.00 NEaar 1713b SiLbto1b England Sidestrand Lower Unio Bed TG 2632 3989 52º 54' 30.15" 001º 21' 57.86" opercula Bithynia tentaculata 2 0.84 0.00 0.40 0.01 1.05 0.01 0.62 0.01 0.36 0.01 0.20 0.00 2 0.73 0.00 0.36 0.00 0.65 0.00 0.54 0.00 0.28 0.00 0.26 0.00 NEaar 1714b SiLbto2b England Sidestrand Lower Unio Bed TG 2632 3989 52º 54' 30.15" 001º 21' 57.86" opercula Bithynia tentaculata 2 0.83 0.00 0.55 0.04 1.03 0.02 0.62 0.02 0.34 0.00 0.21 0.01 2 0.73 0.01 0.37 0.00 0.75 0.02 0.55 0.01 0.30 0.01 0.22 0.00 NEaar 1715b SiLbto3b England Sidestrand Lower Unio Bed TG 2632 3989 52º 54' 30.15" 001º 21' 57.86" opercula Bithynia tentaculata 2 0.83 0.01 0.53 0.00 1.05 0.03 0.63 0.01 0.34 0.01 0.21 0.00 2 0.73 0.01 0.37 0.00 0.78 0.00 0.55 0.00 0.31 0.00 0.21 0.00 NEaar 2035b SiLBto4b England Sidestrand Lower Unio Bed TG 2632 3989 52º 54' 30.15" 001º 21' 57.86" opercula Bithynia tentaculata 2 0.81 0.00 0.50 0.00 1.06 0.00 0.62 0.01 0.36 0.02 0.20 0.00 2 0.74 0.00 0.39 0.00 0.79 0.00 0.56 0.00 0.29 0.00 0.20 0.00 NEaar 1996b SiLBto5b England Sidestrand Lower Unio Bed TG 2632 3989 52º 54' 30.15" 001º 21' 57.86" opercula Bithynia tentaculata 2 0.81 0.00 0.50 0.00 1.07 0.01 0.63 0.01 0.35 0.00 0.21 0.00 2 0.74 0.00 0.36 0.00 0.68 0.01 0.53 0.00 0.28 0.00 0.24 0.00 NEaar 1976b SuBtro1b England Sugworth Organic sediments SP 513007 51º 42' 08.05" -001º 15' 27.33" opercula Bithynia tentaculata 3 0.84 0.01 0.51 0.02 1.10 0.00 0.65 0.00 0.38 0.01 0.14 0.00 2 0.74 0.00 0.37 0.00 0.81 0.00 0.57 0.00 0.28 0.00 0.15 0.00 NEaar 1977b SuBtro2b England Sugworth Organic sediments SP 513007 51º 42' 08.05" -001º 15' 27.33" opercula Bithynia tentaculata 3 0.84 0.01 0.52 0.00 1.16 0.01 0.66 0.00 0.39 0.02 0.13 0.01 2 0.74 0.00 0.36 0.00 0.81 0.00 0.57 0.00 0.28 0.00 0.16 0.00 NEaar 1978b SuBtro3b England Sugworth Organic sediments SP 513007 51º 42' 08.05" -001º 15' 27.33" opercula Bithynia tentaculata 2 0.87 0.00 0.56 0.00 1.21 0.00 0.67 0.00 0.37 0.00 0.13 0.00 2 0.75 0.00 0.38 0.00 0.59 0.00 0.54 0.00 0.26 0.00 0.17 0.00 NEaar 1979b SuBtro4b England Sugworth Organic sediments SP 513007 51º 42' 08.05" -001º 15' 27.33" opercula Bithynia tentaculata 2 0.85 0.00 0.49 0.01 1.13 0.00 0.65 0.01 0.40 0.00 0.15 0.00 2 0.75 0.00 0.37 0.00 0.86 0.00 0.56 0.00 0.30 0.00 0.15 0.00 NEaar 1994b SuBtro5b England Sugworth Organic sediments SP 513007 51º 42' 08.05" -001º 15' 27.33" opercula Bithynia tentaculata 2 0.84 0.00 0.53 0.00 1.12 0.01 0.67 0.01 0.40 0.02 0.14 0.00 2 0.36 0.05 0.10 0.13 0.00 0.00 0.32 0.02 0.15 0.21 0.77 0.06 extreme outlier in FAA to THAA plot, not included in averages NEaar 2034b SuBtro6b England Sugworth Organic sediments SP 513007 51º 42' 08.05" -001º 15' 27.33" opercula Bithynia tentaculata 2 0.82 0.00 0.56 0.00 1.06 0.00 0.63 0.00 0.38 0.04 0.14 0.00 2 0.77 0.00 0.37 0.00 0.67 0.01 0.56 0.00 0.29 0.00 0.13 0.00 NEaar 2633b LOBtro1b England Little Oakley Silts and sands TM 223295 51º 55' 08.90" 001º 13' 58.89" opercula Bithynia troschelii 2 0.87 0.00 0.51 0.00 1.11 0.02 0.65 0.01 0.40 0.01 0.13 0.00 2 0.76 0.00 0.36 0.00 0.73 0.01 0.56 0.00 0.28 0.00 0.16 0.00 NEaar 2164b PaUBtro1b England Pakefield Unio Bed, Sample 36 TM 537888 52º 26' 16.08" 001º 43' 59.04" opercula Bithynia troschelii 2 0.86 0.00 0.52 0.02 1.14 0.01 0.66 0.00 0.37 0.00 0.11 0.00 2 0.79 0.00 0.40 0.00 0.72 0.01 0.59 0.00 0.31 0.00 0.14 0.00 NEaar 2165b PaUBtro2b England Pakefield Unio Bed, Sample 36 TM 537888 52º 26' 16.08" 001º 43' 59.04" opercula Bithynia troschelii 2 0.86 0.00 0.54 0.01 1.17 0.01 0.65 0.00 0.36 0.00 0.11 0.00 2 0.80 0.00 0.40 0.00 0.77 0.00 0.59 0.00 0.30 0.00 0.13 0.00 NEaar 2166b PaUBtro3b England Pakefield Unio Bed, Sample 36 TM 537888 52º 26' 16.08" 001º 43' 59.04" opercula Bithynia troschelii 2 0.84 0.00 0.47 0.00 1.14 0.01 0.63 0.00 0.35 0.00 0.13 0.00 2 0.76 0.00 0.33 0.00 0.77 0.00 0.53 0.00 0.28 0.01 0.15 0.00 NEaar 2167b PaUBtro4b England Pakefield Unio Bed, Sample 36 TM 537888 52º 26' 16.08" 001º 43' 59.04" opercula Bithynia troschelii 2 0.85 0.00 0.50 0.01 1.10 0.02 0.66 0.00 0.37 0.00 0.13 0.00 2 0.79 0.00 0.41 0.00 0.58 0.01 0.57 0.00 0.30 0.00 0.15 0.00 NEaar 1968b PaBtro3b England Pakefield laminated organic channel fill TM 537888 52º 26' 16.08" 001º 43' 59.04" opercula Bithynia sp. 2 0.84 0.00 0.57 0.01 1.03 0.00 0.65 0.00 0.42 0.03 0.12 0.00 2 0.78 0.00 0.49 0.00 0.83 0.00 0.59 0.00 0.33 0.00 0.13 0.00 NEaar 1711b PaBtro1b England Pakefield laminated organic channel fill TM 537888 52º 26' 16.08" 001º 43' 59.04" opercula Bithynia sp. 2 0.86 0.00 0.50 0.01 1.07 0.04 0.62 0.01 0.47 0.01 0.11 0.00 2 0.77 0.01 0.47 0.00 0.76 0.00 0.58 0.00 0.36 0.00 0.14 0.00 NEaar 1712b PaBtro2b England Pakefield laminated organic channel fill TM 537888 52º 26' 16.08" 001º 43' 59.04" opercula Bithynia sp. 2 0.84 0.02 0.48 0.02 1.07 0.02 0.64 0.04 0.46 0.02 0.11 0.00 2 0.77 0.00 0.44 0.00 0.74 0.03 0.57 0.00 0.35 0.00 0.14 0.01 NEaar 1452b WRBtro1b England West Runton Freshwater Bed D TG 182432 52º 56' 29.19" 001º 14' 51.87" opercula Bithynia troschelii 2 0.86 0.01 0.52 0.01 1.13 0.04 0.66 0.00 0.40 0.00 0.13 0.00 2 0.77 0.00 0.40 0.01 0.86 0.00 0.59 0.01 0.33 0.00 0.14 0.00 NEaar 1453b WRBtro2b England West Runton Freshwater Bed D TG 182432 52º 56' 29.19" 001º 14' 51.87" opercula Bithynia troschelii 2 0.86 0.01 0.52 0.00 1.09 0.03 0.66 0.00 0.40 0.01 0.12 0.00 2 0.80 0.00 0.40 0.00 0.84 0.00 0.59 0.00 0.32 0.01 0.14 0.00 NEaar 1454b WRBtro3b England West Runton Freshwater Bed D TG 182432 52º 56' 29.19" 001º 14' 51.87" opercula Bithynia troschelii 2 0.86 0.01 0.51 0.00 1.07 0.00 0.66 0.00 0.40 0.00 0.13 0.00 2 0.76 0.01 0.38 0.00 0.84 0.00 0.59 0.00 0.31 0.01 0.15 0.02 NEaar 1455b WRBtro4b England West Runton Freshwater Bed D TG 182432 52º 56' 29.19" 001º 14' 51.87" opercula Bithynia troschelii 2 0.86 0.00 0.51 0.00 1.09 0.03 0.65 0.00 0.40 0.00 0.12 0.00 2 0.79 0.02 0.41 0.01 0.84 0.01 0.60 0.01 0.35 0.02 0.14 0.01 NEaar 1972b WRBtro6b England West Runton Freshwater Bed D TG 182432 52º 56' 29.19" 001º 14' 51.87" opercula Bithynia troschelii 3 0.87 0.00 0.53 0.01 1.15 0.01 0.65 0.00 0.40 0.00 0.12 0.00 2 0.79 0.00 0.43 0.01 0.74 0.00 0.62 0.00 0.33 0.00 0.14 0.00 NEaar 1973b WRBtro7b England West Runton Freshwater Bed D TG 182432 52º 56' 29.19" 001º 14' 51.87" opercula Bithynia troschelii 3 0.86 0.00 0.53 0.01 1.15 0.01 0.68 0.00 0.40 0.00 0.12 0.00 2 0.80 0.00 0.39 0.00 0.93 0.00 0.60 0.00 0.34 0.00 0.14 0.00 NEaar 1974b WRBtro8b England West Runton Freshwater Bed D TG 182432 52º 56' 29.19" 001º 14' 51.87" opercula Bithynia troschelii 2 0.87 0.00 0.52 0.00 1.14 0.01 0.68 0.00 0.40 0.00 0.12 0.00 2 0.80 0.00 0.40 0.00 0.89 0.00 0.60 0.00 0.33 0.00 0.13 0.00 NEaar 1975b WRBtro9b England West Runton Freshwater Bed D TG 182432 52º 56' 29.19" 001º 14' 51.87" opercula Bithynia troschelii 2 0.86 0.00 0.52 0.01 1.06 0.02 0.67 0.00 0.39 0.00 0.12 0.00 2 0.79 0.00 0.39 0.00 0.92 0.00 0.62 0.00 0.33 0.00 0.13 0.00 NEaar 3317b WRBtro10b England West Runton Freshwater Bed D TG 182432 52º 56' 29.19" 001º 14' 51.87" opercula Bithynia troschelii 2 0.87 0.00 1.17 0.01 0.67 0.01 0.39 0.00 0.14 0.00 2 0.81 0.00 0.37 0.00 0.95 0.00 0.62 0.01 0.34 0.00 0.14 0.00 NEaar 3318b WRBtro11b England West Runton Freshwater Bed D TG 182432 52º 56' 29.19" 001º 14' 51.87" opercula Bithynia troschelii 2 0.86 0.00 1.12 0.01 0.69 0.00 0.42 0.00 0.13 0.00 2 0.81 0.00 0.38 0.00 0.91 0.00 0.63 0.01 0.35 0.00 0.13 0.00 NEaar 2385b NLBaBto1b Netherlands Bavel clay pit I (1968) 51º 35' 37" 004º 50' 05" opercula Bithynia bavelensis/tentaculata 2 0.91 0.00 0.79 0.08 1.03 0.00 0.88 0.00 0.63 0.01 0.06 0.00 2 0.85 0.00 0.63 0.00 0.63 0.08 0.78 0.02 0.49 0.01 0.07 0.00 NEaar 2454b NLBaBto2b Netherlands Bavel clay pit I (1968) 51º 35' 37" 004º 50' 05" opercula Bithynia bavelensis/tentaculata 2 0.91 0.00 0.60 0.00 0.92 0.02 0.82 0.00 0.62 0.02 0.05 0.00 2 0.87 0.00 0.63 0.01 0.79 0.00 0.82 0.01 0.56 0.00 0.06 0.00 NEaar 4957b NLBaBto3b Netherlands Bavel clay pit I (1968) 51º 35' 37" 004º 50' 05" opercula Bithynia bavelensis/tentaculata 2 0.91 0.00 0.69 0.03 0.90 0.10 0.87 0.01 0.63 0.01 0.05 0.00 2 0.87 0.00 0.64 0.00 0.50 0.08 0.81 0.00 0.53 0.01 0.08 0.00 NEaar 4958b NLBaBto4b Netherlands Bavel clay pit I (1968) 51º 35' 37" 004º 50' 05" opercula Bithynia bavelensis/tentaculata 2 0.90 0.00 0.62 0.01 0.84 0.15 0.86 0.00 0.67 0.01 0.06 0.01 2 0.85 0.00 0.62 0.00 0.66 0.14 0.82 0.01 0.58 0.00 0.07 0.00 NEaar 6190b WeCrBtro1b England Weybourne Crag Cruickshanks collection TG 112437 (provisional) 52º 56' 55.43" 001º 08' 38.59" opercula Bithynia troschelii 2 0.92 0.00 0.77 0.00 0.69 0.02 0.93 0.00 0.77 0.00 0.02 0.00 2 0.86 0.01 0.68 0.02 0.42 0.01 0.88 0.01 0.66 0.01 0.03 0.00 NEaar 6191b WeCrBtro2b England Weybourne Crag Cruickshanks collection TG 112437 (provisional) 52º 56' 55.43" 001º 08' 38.59" opercula Bithynia troschelii 2 0.93 0.00 0.71 0.00 0.64 0.01 0.94 0.01 0.78 0.00 0.02 0.00 2 0.91 0.01 0.71 0.00 0.57 0.11 0.89 0.00 0.72 0.00 0.02 0.00 NEaar 2384b NLTeBtro1b Netherlands Tegelen Russel Tiglia Egypte; gully fill (1970), 1.50-2.00 51º 21' 00" 006º 10' 00" opercula Bithynia transsylvanica/troschelii 2 0.95 0.00 0.99 0.00 0.91 0.02 0.93 0.01 0.82 0.00 0.01 0.00 2 0.91 0.01 0.83 0.00 0.46 0.02 0.90 0.01 0.73 0.03 0.02 0.00 NEaar 2453b NLTeBtro2b Netherlands Tegelen Russel Tiglia Egypte; gully fill (1970), 1.50-2.00 51º 21' 00" 006º 10' 00" opercula Bithynia transsylvanica/troschelii 2 0.94 0.00 0.72 0.02 0.74 0.00 0.92 0.00 0.84 0.01 0.02 0.00 2 0.93 0.00 0.80 0.01 0.35 0.00 0.89 0.01 0.76 0.02 0.03 0.00 NEaar 4955b NLTeBtro3b Netherlands Tegelen Russel Tiglia Egypte; gully fill (1970), 1.50-2.00 51º 21' 00" 006º 10' 00" opercula Bithynia transsylvanica/troschelii 2 0.94 0.00 0.78 0.02 0.66 0.07 0.93 0.00 0.84 0.01 0.02 0.00 2 0.93 0.00 0.79 0.00 0.46 0.05 0.91 0.00 0.77 0.00 0.02 0.00 NEaar 4956b NLTeBtro4b Netherlands Tegelen Russel Tiglia Egypte; gully fill (1970), 1.50-2.00 51º 21' 00" 006º 10' 00" opercula Bithynia transsylvanica/troschelii 2 0.94 0.00 0.79 0.03 0.52 0.01 0.95 0.00 0.83 0.00 0.01 0.00 NEaar 6189b WeCrBto1b England Weybourne Crag Cruickshanks collection TG 112437 (provisional) 52º 56' 55.43" 001º 08' 38.59" opercula Bithynia troschelii 2 0.94 0.01 0.72 0.06 0.78 0.03 0.95 0.01 0.84 0.00 0.01 0.00 2 0.88 0.00 0.69 0.00 0.22 0.01 0.92 0.00 0.79 0.01 0.04 0.00 NEaar 6188b AlThBo1b England Aldringham Thorpe Cruickshanks collection TM 465608 52º 11' 23.43" 001º 36' 24.64" opercula Bithynia sp 2 0.93 0.00 0.62 0.01 0.52 0.09 0.97 0.00 0.90 0.02 0.01 0.00 2 0.88 0.00 0.80 0.01 0.29 0.00 0.94 0.00 0.84 0.04 0.03 0.00 NEaar 2386b NLrBto1b Germany Frechen brown coal pit, Duitsland 50º 55' 00" 006º 46' 00" opercula Bithynia tentaculata 2 0.96 0.00 1.11 0.01 0.35 0.02 0.95 0.00 0.95 0.04 0.01 0.00 2 0.93 0.01 0.95 0.00 0.43 0.01 0.92 0.02 0.92 0.05 0.01 0.00 NEaar 2455b NLrBto2b Germany Frechen brown coal pit, Duitsland 50º 55' 00" 006º 46' 00" opercula Bithynia tentaculata 2 0.96 0.00 0.92 0.00 0.66 0.21 0.95 0.01 0.98 0.00 0.01 0.00 2 0.95 0.01 0.93 0.00 0.27 0.05 0.94 0.00 0.92 0.02 0.01 0.00 NEaar 4959b NLrBto3b Germany Frechen brown coal pit, Duitsland 50º 55' 00" 006º 46' 00" opercula Bithynia tentaculata 2 0.95 0.00 0.84 0.03 0.32 0.08 0.95 0.00 0.95 0.01 0.01 0.00 2 0.94 0.00 0.94 0.00 0.28 0.03 0.93 0.00 0.91 0.00 0.01 0.00 NEaar 4960b NLrBto4b Germany Frechen brown coal pit, Duitsland 50º 55' 00" 006º 46' 00" opercula Bithynia tentaculata 2 0.94 0.00 0.86 0.04 0.30 0.03 0.95 0.00 0.95 0.00 0.01 0.00 2 0.93 0.00 0.92 0.00 0.13 0.02 0.93 0.00 0.90 0.00 0.02 0.00 NEaar 2840b BLBco1b England Prospect Quarry, Thorley, Isle of Wight Bembridge Limestone, Eocene SZ 648864 50º 40' 37.98" -001º 27' 23.32" opercula Bithynia conica 2 0.61 0.02 0.99 0.01 0.00 0.00 0.94 0.00 1.07 0.05 0.01 0.00 2 0.37 0.01 1.00 0.01 0.00 0.00 0.91 0.01 1.04 0.02 0.03 0.00 NEaar 2841b BLBco2b England Prospect Quarry, Thorley, Isle of Wight Bembridge Limestone, Eocene SZ 648864 50º 40' 37.98" -001º 27' 23.32" opercula Bithynia conica 2 0.92 0.10 1.02 0.01 0.00 0.96 0.00 1.05 0.01 0.00 0.00 2 0.41 0.01 1.00 0.01 0.00 0.00 0.92 0.00 1.05 0.02 0.03 0.01 NEaar 2842b BLBco3b England Prospect Quarry, Thorley, Isle of Wight Bembridge Limestone, Eocene SZ 648864 50º 40' 37.98" -001º 27' 23.32" opercula Bithynia conica 2 0.86 0.06 1.01 0.01 0.00 0.00 0.96 0.00 1.08 0.02 0.00 0.00 2 0.51 0.04 0.99 0.01 0.00 0.00 0.90 0.03 1.05 0.02 0.02 0.01