. Annual report of the Regents. New York State Museum; Science. NIAGARA FALLS AND VICINITY I99 Found in the upper Clinton limestone and the Clinton lenses and abundantly throughout the lower and middle Rochester shale at Niagara. Also at Lockport and elsewhere (Hall). Spirifer crispus (Hisinger) (Fig. ii8) (Hall. 1852. Pal. N. Y. 2:262, pi. 54) Distinguishing characters. Small size; very convex pedicle valve with incurved beak and high area, which does not extend to car- ^ ^ ^ Fig. 118 Spirifer crispus dinal extremities; broad rounded plications, from six to eight on each valve, strongest near
. Annual report of the Regents. New York State Museum; Science. NIAGARA FALLS AND VICINITY I99 Found in the upper Clinton limestone and the Clinton lenses and abundantly throughout the lower and middle Rochester shale at Niagara. Also at Lockport and elsewhere (Hall). Spirifer crispus (Hisinger) (Fig. ii8) (Hall. 1852. Pal. N. Y. 2:262, pi. 54) Distinguishing characters. Small size; very convex pedicle valve with incurved beak and high area, which does not extend to car- ^ ^ ^ Fig. 118 Spirifer crispus dinal extremities; broad rounded plications, from six to eight on each valve, strongest near the fold and sinus; fine, elevated, thread- like concentric striae. Found in the Clinton lenses and the lower and particularly the middle Rochester shale (Bryozoa beds) at Niagara. Also at Lock- port and elsewhere (Hall). Spirifer crispus var corallinensis (Geo!, soc. Am. Bui. 11:352; Hall. 1852. Pal. N. Y. 2:328, pi. 74, fig. Qa-h) Distinguishing characters. Uniformly obsolescent plications, an- gular mesial sinus; otherwise like preceding. Found in the Clinton lower limestone, the lenses, and the lower Rochester shale. Not abundant. This variety connects S. cris- pus with S. e r i e n s i s. It is characteristic of the Coralline limestone of eastern New York. Spirifer eriensis Grabau (Fig. 119) {Gcol. soc. Am. Bui. 2:366, pi. 21) Distinguishing characters. Ventricose pedicle valve, of subrhomboidal outline, Fig. 119 spirifer eriensis high area, pronounced angular mesial sinus uniformly increasing in width forward, strong frontal emargination; sinus bounded by strong rounded prominent plications, with fainter. 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
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Keywords: ., bookauthorne, bookcentury1800, bookdecade1880, booksubjectscience
