. Annual report of the regents of the university of the state of New York on the condition of the State Cabinet of Natural History and the historical and antiquarian collection annexed thereto. Science. 350 EIGHTEENTH REPORT ON THE STATE CABINET. GENUS ONCOCERAS (Hall). ONCOCERAS ORCAS. Cyrtoceras orcas : Report of Progress Geol. Survey of Wisconsin, 1860-1, p. 42. This species should properly be referred to the Genus Oncoceras, of which it is the only representative at present known to me in this forma- tion in Wisconsin, GENUS GOMPHOCERAS (Sowerby). GOMPHOCERAS SEPTORIS (n. s.) The outer cha
. Annual report of the regents of the university of the state of New York on the condition of the State Cabinet of Natural History and the historical and antiquarian collection annexed thereto. Science. 350 EIGHTEENTH REPORT ON THE STATE CABINET. GENUS ONCOCERAS (Hall). ONCOCERAS ORCAS. Cyrtoceras orcas : Report of Progress Geol. Survey of Wisconsin, 1860-1, p. 42. This species should properly be referred to the Genus Oncoceras, of which it is the only representative at present known to me in this forma- tion in Wisconsin, GENUS GOMPHOCERAS (Sowerby). GOMPHOCERAS SEPTORIS (n. s.) The outer chamber of a Gomphoceras, including the first septum, shows a submarginal siphuncle, with broad subelliptical section. The lateral aper- ture extends to a point nearly half way from the apex to the first septum, and is continued in a narrow constriction nearly to the apex, where it is united with the larger aperture: the margin of this is contracted into tubular folds, so narrow as to present the appearance of three small rounded lateral apertures, with a similar one on the dorsal side. This peculiarity of the aperture is suflicient for specific determination, when compared with any species known to 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. Albany, Regents of the University of the State of New York
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectscience, bookyear1853
