. Bulletin - New York State Museum. Science. Fig. 125 Whitfleldella oblata •defined beak; nearly equally convex valves; central groove on pedicle valve and slight elevation on brachial valve; surface marked •only by lines of growth. Found in the upper Medina sandstone at Niagara. Also at Lockport (Hall). Whitiieldella intermedia Hall (Fig. 126). Atrypa intermedia Hall {1852. Pal. N. Y. 2:77, pi. 24) Distinguishing characters. Obovate; rapidly expanding to front, which is abruptly rounded; length and width nearly equal; convex near beak, flatter toward front; slight frontal sinuosity; '- faint
. Bulletin - New York State Museum. Science. Fig. 125 Whitfleldella oblata •defined beak; nearly equally convex valves; central groove on pedicle valve and slight elevation on brachial valve; surface marked •only by lines of growth. Found in the upper Medina sandstone at Niagara. Also at Lockport (Hall). Whitiieldella intermedia Hall (Fig. 126). Atrypa intermedia Hall {1852. Pal. N. Y. 2:77, pi. 24) Distinguishing characters. Obovate; rapidly expanding to front, which is abruptly rounded; length and width nearly equal; convex near beak, flatter toward front; slight frontal sinuosity; '- faint growth lines. Found in the Clinton lenses and lowest Clinton shales at Niagara. Also in the upper Clinton lime- stone at Lockport (Hall). Whitfieldella cylindrica Hall (Fig. 127). Atrypa cylin- d r i c a Hall (1852. Pal. N. Y. 2:y6, pi. 24). 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; New York State Museum. Albany : New York State Education Dept
Size: 1190px × 2100px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectscience, bookyear1887
