. Bulletin - New York State Museum. Science. Fig-. 99 Meristella nasuta strongly marked muscular impression shown in the internal mold, the most common condition of preservation of the shell. The pelecypods are represented by a number of species. Among these are G o n i o p h o r a p e r a n g u 1 a t a [fig. 102], charac- terized by an extremely sharp umbonal ridge, above which the shell is concave; Conocardium cuneus [fig. 103], recog- nized by its form and sharp radii; and Panenka dicho- toma [fig. 104], characterized by a prominent beak and often by bifurcating radii. The common gastropods
. Bulletin - New York State Museum. Science. Fig-. 99 Meristella nasuta strongly marked muscular impression shown in the internal mold, the most common condition of preservation of the shell. The pelecypods are represented by a number of species. Among these are G o n i o p h o r a p e r a n g u 1 a t a [fig. 102], charac- terized by an extremely sharp umbonal ridge, above which the shell is concave; Conocardium cuneus [fig. 103], recog- nized by its form and sharp radii; and Panenka dicho- toma [fig. 104], characterized by a prominent beak and often by bifurcating radii. The common gastropods are: Pleurotomaria arata [fig. 105]^ chieflj' represented by internal molds, and readily recognized by their form, low spire, depressed rounded whorls and deep and large umbilicus; Bellerophon curvilin- eatus [fig. 106], with a discoidal form, sharp peripheral. 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
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectscience, bookyear1887
