Box 25, Folder 7: Paleontology III

8 8 7

Mollusca

Gasteropods

[pencil sketch]

Bellerophon bilobatus.

P3 p 287

Bellerophon bilobatus, Sowerby; Emmons, N.Y. Geol. Report 1842 p. 302 fig. 6. Hall, Pal. of N.Y. vol. 1 p. 184 pl. 40 fig. 3. and p. 185 pl. 40 figs. 4, 5, & 6 (varieties) & p 307, pl 83 fig 9. - Geol. Wis 1 p. 39 fig 7 & p. 438

Involute subglobose; height and width about equal; aperture bib bilobate, large, subreniform; surface marked by fine striae, which, ascending from the umbilieus, form a broad arch on the side of the shell, and, bending downwards, meet in an abrupt curve on the dorsal line.

H 0.5 to 0.7

Lower Silurian - Trenton Limestone

& Hudson River Group.

Middleville, Trenton Falls, Herkimer, Turin, Watertown, Glens Falls, & Plattsburgh Pulaski & Loraine N. York. Mineral Point + Menasha Wisconsin (I A. L.)

Penna

Also in Europe

Bellerophon Patersoni Hall Geol. Rep. Wis vol 1 p 55 fig 9 & p. 438

Blue + Green Shales