. Annual report. New York State Museum; Science; Science. Meristella champlaini quadrata of the Helderbergian fauna; M. lata and M. v a s - c u 1 a r i a of the Oriskany fauna. Comparisons therewith are in- troduced seriatim. Meristella laevis Vanuxem (A trypa laevis Vanux, Geol. N. Y.: Rep't on Third Dist. 1842. p. 120, fig. 2; Merista laevis Hall, Pal. N. Y. 1859. 31247, pi. 39, fig. 3, 4; Meristella laevis Hall & Clarke, Pal. N. Y. 1894. v. 8, pt 2, pi. 43, fig. 3-6) is a rather elongate shell with long cardinal slopes making a relatively small angle with each other. Both valves are mod
. Annual report. New York State Museum; Science; Science. Meristella champlaini quadrata of the Helderbergian fauna; M. lata and M. v a s - c u 1 a r i a of the Oriskany fauna. Comparisons therewith are in- troduced seriatim. Meristella laevis Vanuxem (A trypa laevis Vanux, Geol. N. Y.: Rep't on Third Dist. 1842. p. 120, fig. 2; Merista laevis Hall, Pal. N. Y. 1859. 31247, pi. 39, fig. 3, 4; Meristella laevis Hall & Clarke, Pal. N. Y. 1894. v. 8, pt 2, pi. 43, fig. 3-6) is a rather elongate shell with long cardinal slopes making a relatively small angle with each other. Both valves are moderately and subequally convex, the ventral valve faintly sinuate medially in old stages with a broad and rather short linguate extension on the front margin, which when slightly broken, as in most of Hall's figures, gives the front a subtruncate appearance. The dorsal valve has a broadly defined median ridge in all stages, but obscure near the margin in the adult. On the interior there is seldom any trace of vascular impressions depart- ing from the muscular 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 State Museum. Albany : University of the State of New York
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectscience, bookyear1902
