PLATE III 
Fig. 1. Modiolopsis modiolaris, Hall. Half a mile east of Worthville, New 
York, along a creek north of the pike. 
Fig. 2. Rafinesquina nasuta, Conrad. Pedicel valves. From a ferruginous 
boulder containing Trinucleus, a short distance west of the railroad bridge, a mile 
east of Pulaski, New York. 
Fig. 3. Archinacella pulaskiensis. Pulaski, New York, west of the railroad 
bridge, one mile east of New York. 
Fig. 4. Colpomya pusilla. In Trinucleus bed, west of railroad bridge, one 
mile east of Pulaski, New York. 
Fig. 5. Orthodesma nasutum, Conrad. Two and a half miles east of Worthville, 
New York. 
Fig. 6. Orthodesma pulaskiensis. Immediately below railroad bridge, one 
mile east of Pulaski, New York. 
Fig. 7. Cymatonota pholadis, Conrad. Near head of Gulf west of Turin, New 
York, along road leading ’southwest up the hill toward a school house. 
Fig. 8. Ctenodonta lorrainensis. Half way between Lorraine and Worthville, 
New York, where the pike crosses a creek. A, interior cast; B, interior cast of 
the opposite valve, inverted, with beak down. 
Fig. 9. Glyptorthis crispata, Emmons. Half way between Lorraine and Worth- 
ville, New York, where the pike crosses a creek. 
Fig. 10. Orthodesma sp. At the cross roads one mile south of Barnes Corners, 
New York. See under Orthodesma pulaskiensis. 
Fig. 11. Pterinea (Caritodens) demissa, Conrad. Young specimen. Chambly 
village, on the Richelieu river, Province of Quebec. Geological Survey of Canada. 
No. 8433, Victoria Memorial Museum, Ottawa. Canada. 
Fig. 12. Byssonychia radiata. Hall. A, Form with 55 plications; B, with 47 
plications. C, with 48 plications; type of species, the original of Fig. 4a, on 
plate 80, vol. I, Paleontology of New York. Pulaski, New York. 
Fig. 13. Lingula sp. Belonging to the Lingula proeteri group. At the Tri- 
nucleus horizon, a short distance west of the railroad bridge, one mile east of 
Pulaski, New York. See under Lingula rectilateralis, Emmons. 
Fig. 14. Ischyrodonta curia, Conrad. Bennett Bridge, one mile down stream 
from Salmon River Falls, New York. 
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