. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. 1872, p. 227, plate 4, fig. 15 a, 5.) Collett's Indiana Et. 1883, page 159, plate 32, figs. 15, 16, natural size^ opposite sides of a specimen growing on a crinoidal stem. From Indiana to New Mexico; Upper Coal Measures, XV. Platyceras nodosum, Conrad. Annual Report of New. York Sur., 1841. Oriskany. VII. Hall, Pal. N. Y. Vol. 3, 1859, page 472, plate 115, selected figs. 3 «j, 5, c, a young specimen which has kept the proper form of the shell. Other figures s
. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. 1872, p. 227, plate 4, fig. 15 a, 5.) Collett's Indiana Et. 1883, page 159, plate 32, figs. 15, 16, natural size^ opposite sides of a specimen growing on a crinoidal stem. From Indiana to New Mexico; Upper Coal Measures, XV. Platyceras nodosum, Conrad. Annual Report of New. York Sur., 1841. Oriskany. VII. Hall, Pal. N. Y. Vol. 3, 1859, page 472, plate 115, selected figs. 3 «j, 5, c, a young specimen which has kept the proper form of the shell. Other figures show specimens three times as large. All the specimens are casts, with sometimes impressions of the exterior. The nodes or knobs are casts of depressions on the inside surface, where spines projected from the outside of the shell. In nearly all the larger specimens the apex is broken off leaving only the large whorl or a part of it. Possibly the apex became solid in later life and therefore could not have an internal cast. Found at many places along the Oriskany outcrop in N. Y.—In Penn- sylvania, C. E. Hall, at Marshall's Creek, Monroe Co., 00, 804- 41, Hamilton. VIII c. [?] Platyceras obliquum, Keyes. Amer. Philos. Soc. 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 Lesley, J. P. (J. Peter), 1819-1903; Pennsylvania. Board of Commissioners for the Second Geological Survey. Harrisburg, Board of Commissioners for the Geological Survey
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectpaleontology, bookyea
