. Annual report. New York State Museum; Science; Science. ^tm&m^. Rhipidomella logani •dinal process rather diminutive, curved forward, trifid at its end which does not project beyond the hinge. In size, a width of 34 mm and a length of 29 mm is an average maximum and the limit of variation in size is not far from this. Lower Devonic. Grande Greve, P. Q. Rhipidomella lehuquetiana nov. Shell small lenticular or subplanoconvex. General outline sub- •circular, a little wider than long. Ventral valve depressed, beak generally obscured or resorbed, umbo depressed; a broad and low sinus begins i
. Annual report. New York State Museum; Science; Science. ^tm&m^. Rhipidomella logani •dinal process rather diminutive, curved forward, trifid at its end which does not project beyond the hinge. In size, a width of 34 mm and a length of 29 mm is an average maximum and the limit of variation in size is not far from this. Lower Devonic. Grande Greve, P. Q. Rhipidomella lehuquetiana nov. Shell small lenticular or subplanoconvex. General outline sub- •circular, a little wider than long. Ventral valve depressed, beak generally obscured or resorbed, umbo depressed; a broad and low sinus begins in the umbonal region, widens outward and becomes deep on the anterior margin making a strong sinuosity or tongue •extending upward into the other valve. The surface at the sides of the sinus is broad and flat except about the margins where it is more abrupt. Surface radii fine, rounded, numerous and subequal and cardinal area moderately high and curved downward at the sides. On the. 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
