. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. Orthoceras pressum, Rogers, 1858.âBigsby, Thes. Silur. Trenton. Quoted in Report T, page 55.âII c, Orthoceras primigenium, Vanuxem. Geol. 3rd. Dist N, Y. 1842, page 36, fig. 2, 4 âEmm Geol. 2d Dist. page 179, fig. 53,4. Cdlcif- erous sand- stone. II a.âHall, Pal. N. Y., Vol. 1, p. 13, plate 3, figs. 11 and 11 «.âWhit- Van. i- \. '-â â¢'i^'-«»iii»'M!Hl£ fleld, Bulletin Amer. Mu- seum Nat. Hist. N. Y. Vol. 2, No. 2, page 56, plate 10, fig. 1, long section
. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. Orthoceras pressum, Rogers, 1858.âBigsby, Thes. Silur. Trenton. Quoted in Report T, page 55.âII c, Orthoceras primigenium, Vanuxem. Geol. 3rd. Dist N, Y. 1842, page 36, fig. 2, 4 âEmm Geol. 2d Dist. page 179, fig. 53,4. Cdlcif- erous sand- stone. II a.âHall, Pal. N. Y., Vol. 1, p. 13, plate 3, figs. 11 and 11 «.âWhit- Van. i- \. '-â â¢'i^'-«»iii»'M!Hl£ fleld, Bulletin Amer. Mu- seum Nat. Hist. N. Y. Vol. 2, No. 2, page 56, plate 10, fig. 1, long section showing septa in lower half; syphon apparently- very small and subcentral. Beekmantown, N. Y\Calc, IIa. Orthoceras profundum, Hall. 15th Annual Report, 1862, page 7 6, plate 7, fi 8, el mark e d engthwise by sharp ridges, one- //<^/f. js/rTiTTTFlJST'^^ tenth of an inch apart; and ringed (annulated) by sharp rather distinct stri^, giving the long ridges a wavy look; also often finer striae of growth; differs from 0. imbrieatum of the Niagara in show- ing no intermediate finer longitudinal striae; and from gatum in more regular arrangement of both long and Cross lines. In two individuals of 1^ inch diameter the preserved portion of the outer chamber is 6 inches long. Upper Helder- lerg limestone at Waterville, N. Y.â VIII a. Orthoceras punctostriatum, Hall. Dawson's Acadian Y-v\. 212 Gleology, 1868, page 605, fig. 212 ; section circu- lar, siphuncle central; surface very finely striated with unequal wavy striae, between which are oblong indentations, often running into each other. A shell remarkable for its extremely slight. 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. Har
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