. Annual report of the Regents of the University on the condition of the State Cabinet of Natural History, with catalogues of the same. State Cabinet of Natural History (N. Y. ); Science; Museums. 48 [Senate equal to the greatest width of the shell, terminating in minute triangular extensions ; area sublinear, incurved beyond the plane of the valves. Surface unknown. Internal casts of the ventral valve of this little shell are common in the Oriskany ?andstoTie; but no specimens have been met with, showing its external charaetrers, nor have any specimens of the dorsal valve yet been recognized.
. Annual report of the Regents of the University on the condition of the State Cabinet of Natural History, with catalogues of the same. State Cabinet of Natural History (N. Y. ); Science; Museums. 48 [Senate equal to the greatest width of the shell, terminating in minute triangular extensions ; area sublinear, incurved beyond the plane of the valves. Surface unknown. Internal casts of the ventral valve of this little shell are common in the Oriskany ?andstoTie; but no specimens have been met with, showing its external charaetrers, nor have any specimens of the dorsal valve yet been recognized. Geological position and locality. In the Oriskany sandstone, Albany county. Strophomena woolworthana ( n. s.)> Pal. Vol. iii, pi. 17, f. 1. Shell semielliptical, often extremely elongate : ventral valve concave towards the front and flat on the lateral margins, de- pressed convex near the beak ; beak small, and scarcely rising above the edge of the valve : dorsal valve convex, most elevated near the front, and flattened near the um1)o; beak not project- ing : hinge-line straight, equal to the greatest width of the shell; area linear, conspicuous, partly common to both valves; foramen broadly triangular, partly or entirely closed Surface finely striated; stride rounded, crowded, simple, increasing by im- plantation ; concentrically crossed by closely arranged striae and a few distant lines of growth. This species approaches in character to Strophoviena ( Leptccna ) sub- plana ( Palaeontology of New-York. Vol. ii, pi. 53, f. S, 9 & 10 ) ; but the shell is more robust, and the striaa more round and stronger than in that shell. Geological position and locality. Shaly limestone of the Lower Hel- derberg, Albany and Schoharie 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 State Cabinet of
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectm, booksubjectscience
