. Annual report of the regents of the university of the state of New York on the condition of the State Cabinet of Natural History and the historical and antiquarian collection annexed thereto. Science. 48 \ Senate ©qual to tlie 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 sandstone; but no specimens have been met with, showing its external characters, nor have any specimens of tlie dorsal valve yet been recog
. Annual report of the regents of the university of the state of New York on the condition of the State Cabinet of Natural History and the historical and antiquarian collection annexed thereto. Science. 48 \ Senate ©qual to tlie 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 sandstone; but no specimens have been met with, showing its external characters, nor have any specimens of tlie dorsal valve yet been recognized. Geological position and locaHity. In the Oriskany sandstone, Albany county. Strophomena woolwortbana (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 umbo; 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 J stri^ rounded, crowded, simple, increasing by im- plantation ; concentrically crossed by closely arra^nged strise and a few distant lines of growth, Tliis species approa-ches in character to Strophomena (Leptcena) suh- plana ( Palaeontology of New-York, Vol. ii, pi. 53, f. 8, 9 & 10 ) ; but the shell is more robust, and the stride more round and stronger than in that sliell. Geological position and locality. Shaly limestone of the Lower Hel- derbeTg, 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 New York Stat
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectscience, bookyear1853
