. 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. Spirifer vextricosa. Spirifer perlamellosa (). Pal. , pi. 26, Spirifer rugosa, Hall, in Catalogue. Shell trigonal or semicircular, more or less extended on the hinge- line, the extremities varying from obtuse or rounded to extreme- ly mucronate : ventral valve arcuate, the beak much extended beyond the opposite valve, and incurved at the apex; sinus deep, gradually expanding, and
. 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. Spirifer vextricosa. Spirifer perlamellosa (). Pal. , pi. 26, Spirifer rugosa, Hall, in Catalogue. Shell trigonal or semicircular, more or less extended on the hinge- line, the extremities varying from obtuse or rounded to extreme- ly mucronate : ventral valve arcuate, the beak much extended beyond the opposite valve, and incurved at the apex; sinus deep, gradually expanding, and produced in front into a lingui- form extension : dorsal valve convex towards the middle, the mesial elevation very prominent, and the beak closely incurved against the area, or partially closing the foramen of the ventral valve; area moderately wide, frequently much expanded, and becoming linear towards the extremities where the shell is much. 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 Natural History (N. Y. ); University of the State of New York. Board of Regents. Albany, N. Y. : University of the State of New York
Size: 1837px × 1360px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1840, booksubjectm, booksubjectscience
