. Bulletin of the Buffalo Society of Natural Sciences. Natural history -- New York (State); Natural history. 218. Geologisl and Palaeontologist for 1896. Faunas of the Hamilton Group, etc., p. Distinguishing < 'haracters. —Small size: transverse out line, the pedicle valve being much broader than long; convex brachial valve, usually bear- ing a shallow depression along the center; numerous elongated pits covering the surface, showing spine bases Fk; 126 Ambocaelia nana. Cardinal and . •,, j • , dorsal views of ;i characteristic specimen. m well-preserved specimens. from the Nautilus b
. Bulletin of the Buffalo Society of Natural Sciences. Natural history -- New York (State); Natural history. 218. Geologisl and Palaeontologist for 1896. Faunas of the Hamilton Group, etc., p. Distinguishing < 'haracters. —Small size: transverse out line, the pedicle valve being much broader than long; convex brachial valve, usually bear- ing a shallow depression along the center; numerous elongated pits covering the surface, showing spine bases Fk; 126 Ambocaelia nana. Cardinal and . •,, j • , dorsal views of ;i characteristic specimen. m well-preserved specimens. from the Nautilus bed, enlarged (after Gra- 1 i bau). Found m the Nautilus lied a1 the base of the Hamilton shales, on the Lake Shore and in Avrrv's Creek (abundant); Strophalosia bed, on the Lake Shore (very rare). Amhohelia i'i;,i:rMBO.\A. Hall. (Fig. 127.) (Pal. X. Y., .Vol. IV., p. 262, PI. XL1V.) Distinguishing Characters— Large size; sub-globose char- acter: short hinge line: length greater than width: ventri- Fig. 127. Amboccelia prceumbona. Two brachial valves; pedicle valve and profile of same (from Hall). cose pedicle valve, with narrow depression along center; moderately convex brachial valve, occasionally bearing a median depressed line. Found in the upper Moscow shale down to four feet from 1h«' top, at Sections 1 to 5 (abundant). bpinosa. Clarke. (Fig. 128.) (13th Ann. Rep'1 StateGeol. X. Vol. I., p. 177. PL IV.) Distinguishing Characters.—Rather large size; hinge line equal to width of shell: brachial valve concave anteriorly, with upturned margins; low median elevation, indistinct and disappearing towards the front: elongate surface pits, probably marking positions of Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Buffalo Society of Natural Sciences. Buffalo, N.
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