TABLE 1. Shells analyzed during this study
			
Shell ID	# Bands	Site coordinates	Depth (m)	Region	Analyses		
I1-1	82	66*10'N, 18*53'W	22	Iceland	s		
I1-3	36	66*10'N, 18*53'W	22	Iceland	s		
I1-5	35	66*10'N, 18*53'W	22	Iceland	s		
I1-9	40	66*10'N, 18*53'W	22	Iceland	s		
I1-10	40	66*10'N, 18*53'W	22	Iceland	s		
82-381-1	100	41*05'N, 66*56'W	67	Georges Bank	c		
82-381-3	61	41*05'N, 66*56'W	67	Georges Bank	c		
82-381-4	66	41*05'N, 66*56'W	67	Georges Bank	c		
92-315-3	105	40*28'N, 69*29'W	65.5	Nantucket Shoals	o, a		
92-315-4	30	40*28'N, 69*29'W	65.5	Nantucket Shoals	a		
92-315-7	87	40*28'N, 69*29'W	65.5	Nantucket Shoals	d, o		
92-315-10	*	40*28'N, 69*29'W	65.5	Nantucket Shoals	a		
92-315-12	*	40*28'N, 69*29'W	65.5	Nantucket Shoals	a		
92-315-13	30	40*28'N, 69*29'W	65.5	Nantucket Shoals	d, o		
92-315-28	*	40*28'N, 69*29'W	65.5	Nantucket Shoals	a		
92-333-1	80	41*08'N, 67*27'W	57.1	Georges Bank	d		
92-333-2	31	41*08'N, 67*27'W	57.1	Georges Bank	d		
92-333-3	31	41*08'N, 67*27'W	57.1	Georges Bank	d		
92-334-1	60	41*03'N, 67*18'W	66.6	Georges Bank	d		
92-334-2	37	41*03'N, 67*18'W	66.6	Georges Bank	d		
92-334-3	58	41*03'N, 67*18'W	66.6	Georges Bank	d		
92-335-f1	55	41*01'N, 67*10'W	72.1	Georges Bank	c		
92-335-f2	65	41*01'N, 67*10'W	72.1	Georges Bank	c		
92-335-f3	54	41*01'N, 67*10'W	72.1	Georges Bank	c		
92-335-f4	36	41*01'N, 67*10'W	72.1	Georges Bank	c		
92-336-1	51	41*01'N, 67*05'W	70.1	Georges Bank	d		
92-336-2	66	41*01'N, 67*05'W	70.1	Georges Bank	d		
92-336-3	31	41*01'N, 67*05'W	70.1	Georges Bank	d		
92-336-f3	30	41*01'N, 67*05'W	70.1	Georges Bank	c		
92-336-f4	31	41*01'N, 67*05'W	70.1	Georges Bank	c		
92-337-f1	87	41*04'N, 66*51'W	79.1	Georges Bank	c		
92-337-f2	57	41*04'N, 66*51'W	79.1	Georges Bank	c		
92-337-f3	35	41*04'N, 66*51'W	79.1	Georges Bank	c, a		
92-337-f4	125	41*04'N, 66*51'W	79.1	Georges Bank	c		
92-337-f5	37	41*04'N, 66*51'W	79.1	Georges Bank	c		
92-339-1	59	41*06'N, 66*56'W	72.7	Georges Bank	d, c		
92-339-2	57	41*06'N, 66*56'W	72.7	Georges Bank	d, c		
92-339-3	50	41*06'N, 66*56'W	72.7	Georges Bank	d, c, a		
92-339-f1	86	41*06'N, 66*56'W	72.7	Georges Bank	c, a		
92-339-f2	30	41*06'N, 66*56'W	72.7	Georges Bank	c		
92-339-f3	67	41*06'N, 66*56'W	72.7	Georges Bank	c, a		
92-339-f4	85	41*06'N, 66*56'W	72.7	Georges Bank	c		
92-339-f5	60	41*06'N, 66*56'W	72.7	Georges Bank	c		
94-441-1	51	41*03'N, 66*53'W	74	Georges Bank	d, c		
94-441-2	47	41*03'N, 66*53'W	74	Georges Bank	d, c		
94-441-3	60	41*03'N, 66*53'W	74	Georges Bank	d, c	
	
Shell ID notation for Georges Bank and Nantucket Shoals is as follows: (year of collection)-
(NMFS site #)-(shell #, with 'f' indicating fossil).  # Bands is the number of measured bands; 
shells with '*' were not measured, only counted.  Analyses performed on each shell are:
s=synchronization test; d=distance test; c=composite sclerochronology; o=comparison to 
d18O record; a=Asp measurement.