. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. TaL Ohio . Vol X, /y:xx. species, with same name, was described in Proc. Acad. Nat. Sci. Phila. 1871, p. 75. Also in Pal. Ohio, Vol. 1, 1873, page 212, plate 20, fig. 2ci^ internal cast, showing little nodes which occupied depres- sions on the inner surface of shell corresponding [this however is Meek's species; different from Hall's] to the cases of spines on its unknown outside surface ;^2b, another cast. A peculiarity of the shell, the twisting-^f the apex
. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. TaL Ohio . Vol X, /y:xx. species, with same name, was described in Proc. Acad. Nat. Sci. Phila. 1871, p. 75. Also in Pal. Ohio, Vol. 1, 1873, page 212, plate 20, fig. 2ci^ internal cast, showing little nodes which occupied depres- sions on the inner surface of shell corresponding [this however is Meek's species; different from Hall's] to the cases of spines on its unknown outside surface ;^2b, another cast. A peculiarity of the shell, the twisting-^f the apex nearly at right angles side- wise, distinguishes it from P, domosum. It resembles the non-spiny P. reilexum of the Oriskany sandstone, Columbus, O. Corniferous limestone. VIII a,—In Pennsylvania collec- tions. Cat. 000, Claypole's spec. 5-75, 94-45,198-10-12. Platyceras bisulcatum. Hall, Palaeontology of New York, Vol. 3, 1859, p. 310, fig. 4, from the Loiuer^Helderherg formation in New York.— VL [In Pennsylvania, C. E. Hall names it in his MS. report of col- p lections, Dec. 30,1876, from Marcellus and Hamilton strata.— Vlllh. 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
