. Annual report of the Regents. New York State Museum; Science. 186 NEW YORK STATE MUSEUM valve elevated and somewhat incurved; dental lamellae slightly de- veloped, not extending the entire length of the umbonal cavity. Car- dinal process an elongate vertical plate, logitudinally dividing the deep deltidial cavity. Orthis flabellites Foerste (Fig. 94). Orthis f 1 a - b e 11 u 1 u m var. Hall (1852. Pal. N. :254, pi. 52) Distill o-uishin s" Fig. 94 Orthis flabellites Long hinge line; semioval form; coarse, simple rounded plications, equal to spaces between them; marked con
. Annual report of the Regents. New York State Museum; Science. 186 NEW YORK STATE MUSEUM valve elevated and somewhat incurved; dental lamellae slightly de- veloped, not extending the entire length of the umbonal cavity. Car- dinal process an elongate vertical plate, logitudinally dividing the deep deltidial cavity. Orthis flabellites Foerste (Fig. 94). Orthis f 1 a - b e 11 u 1 u m var. Hall (1852. Pal. N. :254, pi. 52) Distill o-uishin s" Fig. 94 Orthis flabellites Long hinge line; semioval form; coarse, simple rounded plications, equal to spaces between them; marked con- centric growth lines. Found in the upper Clinton limestone and the lower Rochester shale at Niagara. Rare. Also in the shale at Lockport (Hall). Orthis (?) punctostriata Hall (Fig. 95) (1852. Pal. N. Y'. 2:254, pi. 52, fig. 5a-f) Distinguishing characters. Subglobose contour, nearly equal, extremely convex valves; beak of pedicle valve somewhat longer than that of brachial valve, but both prominent; short hinge line, still shorter but high area; fine equal bifurcating striae; extremely fine concentric striae; punctate interspaces. Found in the talus of Rochester shale above Lew'iston hights. Rare. Also in the shale at Lockport (Hall). Genus orthostrophia Hall [Ety.: the name refers to the relations of the genus to Orthis and Stropheodonta] (1883. A". Y. state geol. 2d an. rep't, pi. 36; 1892. Pal. N. Y. v. 8, pt I, p. 199, 222,, 253) Shehs with convexity of valves reversed; surface finely plicated; deep narrow muscular area; cardinal process elongate and 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; University of the State of New York. Board of Regents. Albany : J. B. Lyon, State Printer
Size: 1251px × 1998px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorne, bookcentury1800, bookdecade1880, booksubjectscience
