. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. A VIC. 68 Avicula demissa. (Conrad, Journal Acad. Nat. 8ci. Phil. Ill' ^m^^^7¥jmmmmm^^^^^^ ^^i- S, 1842, Hudson river forma- % ^^^^iy^^mmim^B ^i^^-) Emmons' Kept. p. 404, fig. 113, 2. American Geol. I, ii, p. 175, plate 13, fig. 10; Characterises Loraine (Hudson river) shales, and is found in S. W. Virginia.— Illh. Note.—Emmons gives on page 233, the same plate 13, fig. 10, 11, as D'Orbigny's Lyonsia mytiloidea. But Lyonsia is now. BmmcinsJK^ Z Sedgwickia; an
. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. A VIC. 68 Avicula demissa. (Conrad, Journal Acad. Nat. 8ci. Phil. Ill' ^m^^^7¥jmmmmm^^^^^^ ^^i- S, 1842, Hudson river forma- % ^^^^iy^^mmim^B ^i^^-) Emmons' Kept. p. 404, fig. 113, 2. American Geol. I, ii, p. 175, plate 13, fig. 10; Characterises Loraine (Hudson river) shales, and is found in S. W. Virginia.— Illh. Note.—Emmons gives on page 233, the same plate 13, fig. 10, 11, as D'Orbigny's Lyonsia mytiloidea. But Lyonsia is now. BmmcinsJK^ Z Sedgwickia; and S, compressa^ Meek; S. divaricata^ Hall and Whit.; S. fragilis^ Meek; S, neglecta^ Meek, are all from the Cincinnati (Loraine) formation. S. A. Miller's Am. Pal. Foss. 1877.—7/75. Avicula desquamata. See Obolella crassa. J7. Cambrian, Avicula elliptica. (Hall, Palaeontology of N. Y., Vol. I, 1847, Trenton group.) Emmons' American Geol. Vol. I, part 2, page 175, plate 13, fig. 27, a cast of a somewhat elliptical shape, hence called by Emmons suielliptica.—Tren- ton formation.—Hall gives its figure in pi. 36, fig. 3, and compares it to Sowerby's A. oUiqua, Sil. syst. p. 635; adding that it may 13 be an AmionycJiia.—II c. Avicula emacerata. Hall, page 108, fig. 38, 4. (Conrad, ^ V h. 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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