TABLE 1. Distribution of pteropod species in the Wilson Lake section.

Sample
number
Sample depth
(m)
Age after CIE
onset (ky)
Altaspiratella
elongatoidea
Heliconoides
mercinensis
Limacina
aegis
Limacina
novacaesarea
Limacina sp.1 Nannoplankton
zone
19 97.23- 97.29 66.58 - 1 - - - NP10a
20 97.54- 97.60 65.20 1 7 - - -  
21 97.84- 97.90 63.81 1 3 - - -  
22 98.15- 98.21 62.43 2 2 - 2 -  
23 98.45- 98.51 61.05 - 1 - - -  
24 98.76- 98.82 59.14 - 3 1 1 -  
25 99.06- 99.12 58.28 - 6 - - -  
26 99.36-899.43 56.90 1 3 - - -  
27 99.67- 99.73 55.51 - 8 1 1 -  
28 99.97-100.04 54.13 - 1 1 - -  
29 100.28-100.34 52.74 - 4 - - -  
30 100.58-100.64 51.36 - 7 - - -  
31 100.89-100.95 49.98 1 6 - - -  
32 101.19-101.25 48.57 - 4 - - -  
33 101.50-101.56 47.21 - 6 - - -  
34 101.80-101.86 45.83 1 15 1 - -  
36 102.41- 102.47 43.06 - 1 1 - -  
37 102.72-102.78 41.68 1 2 - - 1  
39 103.33-103.37 38.91 1 8 1 - 1  
40 103.63-103.69 37.51 - 5 1 - 1  
41 103.94-104.00 35.70 3 1 - - -  
42 104.24-104.30 33.89 3 1 - - -  
43 104.55-104.61 32.09 - 3 - - -  
45 105.16-105.22 28.47 - 3 - - -  
48 106.07-106.13 23.05 - 2 - - -  
49 106.38-106.44 21.25 1 11 - - - NP9
50 106.68-106.74 19.43 2 13 1? - -  
51 106.98-107.05 17.63 1 13 1 - -  
52 107.08-107.11 17.18 - - 12 - -  
53 107.17-107.20 15.83 1 - 1 - -  
54 107.29-107.35 17.18 - 4 - - -  
56 107.47-107.50 14.76 - 1 - - -  
57 107.59-107.66 14.02 - 11 1 - -  
58 107.69-107.72 13.57 2 3 1 - -  
59 107.78-107.81 13.03 - 5 9 - -  
60 107.90-107.96 12.21 - 4 2 - -  
61 107.99-108.02 11.76 2 1 - - -  
62 108.08-108.11 11.22 - 2 - - -  
63 108.20-108.26 10.41 3 12 2 - 1  
65 108.39-108.42   9.41 - 7 - - -  
67 108.60-108.63   8.15 - 1 - - -  
68 108.69-108.72   7.61 1 3 3 - -  

 

 

TABLE 2. Distribution of pteropod species in the Bass River section.

Sample number Sample depth
(m)
Age after CIE onset (ky) Altaspiratella elongatoidea Heliconoides mercinensis Limacina aegis Limacina novacaesarea Limacina sp.1 Nannoplankton zone
9 349.94-349.97 87.85 - 2 - - - NP10a
13 351.16-351.19 80.76 1 1 - - -  
14 351.46-351.50 78.99 - 1 - - -  
16 352.04-352.07 75.62 1 7 3 - -  
18 352.65-352.68 72.07 - - - 1? -  
20 353.26-353.29 67.05 - 1? - - -  
24 354.48-354.51 54.97 1 - - - -  
25 354.79-354.82 52.03 3 2 1 - -  
26 355.09-355.12 49.08 1 - 1 - -  
28 355.70-355.73 43.34 - 3 - - -  
29 355.98-356.01 40.27 - 9 - - -  
30 356.10-356.13 39.37 - - 1? - -  

 

TABLE 3. Distribution of pteropod species in the Clayton section.

Sample
number
Sample depth
(m)
Age after CIE
onset (ky)
Altaspiratella
elongatoidea
Heliconoides
mercinensis
Limacina
aegis
Limacina
novacaesarea
Limacina sp. 1 Nannoplankton
zone
9 91.44-91.47 37.51 4 5 2 - 1 NP10a
10 91.74-91.78 35.71 - - 1 - -  
11 92.05-92.08 33.90 - 6 - - -  
12 92.35-92.38 32.10 1 - - - -  
14 92.96-92.99 28.49 - - - 1 -  
15 93.27-93.30 26.69 - - - - -  
17 94.03-94.06 22.18 - - 4 - - NP9b
18 94.21-94.24 21.10 - 1 2 - -  
19 94.55-94.58 19.12 - 3 4 - -  
20 94.79-94.82 17.67 1 1 1 - -  
21 95.07-95.10 16.05 - - 1 - -  
22 95.40-95.43 14.07 3 4 2 - -  

 

 

 

TABLE 4. Distribution of pteropod species in the Cambridge-Dorchester section.

Sample number Sample depth (m) Altaspiratella
longatoidea
Heliconoides
mercinensis
Limacina aegis Limacina sp. 1 Limacina sp. 2
8 214.01-214,03 1 3 1 - -
10 215.80-215,83 - 3 - - -
12 217.41-217.44 - 1 1 - -
13 218.50-218.51 - 1? - - -
14 219.30-219.33 1 4 - - -
15 220.22-220.28 3 6 1 - -
16 221.19-221.21 1 - - - -
17 221.47-221.48 1 5 1 2 -
23 222.09-222.14 - - - 1 -
26 222.61-222.62 - - - - 1
33 223.60-223.61 - - - - -

 

TABLE 5. Distribution of Heliconoides mercinensis in the Mattawoman Creek-Billingsley Road core 2 section.

Sample number Sample depth
(m)
Heliconoides
mercinensis
14 5.15-5.20 1?
20 5.74-5.80 2
28 6.55-6.60 1
29 6.65-6.70 1
41 7.85-7.90 3?
49 8.65-8.70 2
64 10.15-10.20 1?
72 10.94-11.00 1?
84 12.17-12.22  
85 12.27-12.32 4, 1?