. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. 844 BRACHIOPODA. I'IS. canadensis, Billingfl, 1R57, (Oboliia cana- densis,) Kep. of Progr. Geo. 8ur. of Can., p. 180, and Can. Nat., vol. 6, p. 222, Black Riv. Or. conradi, Hall, 1808, (Oboliis conradi,) 20th Rep. N. Y. St. MiiH. Nat, Hist., p. 3«8, Niagara Gr. galtensis, see Trimerella gHltennis. magnifiouH, Billings, 1872, (Obol«llina magniflca,) Canadian NuturaliHt, vol. 0, p. 330, Black Riv. Or. parvus, Whitfl
. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. 844 BRACHIOPODA. I'IS. canadensis, Billingfl, 1R57, (Oboliia cana- densis,) Kep. of Progr. Geo. 8ur. of Can., p. 180, and Can. Nat., vol. 6, p. 222, Black Riv. Or. conradi, Hall, 1808, (Oboliis conradi,) 20th Rep. N. Y. St. MiiH. Nat, Hist., p. 3«8, Niagara Gr. galtensis, see Trimerella gHltennis. magnifiouH, Billings, 1872, (Obol«llina magniflca,) Canadian NuturaliHt, vol. 0, p. 330, Black Riv. Or. parvus, Whitfldd, 1882, Geo. Wis., vol. 4, p. .'M7, Galena (ir. DiHciNA, Lamarck, 1819, Hist. Nat. Anim. sans Vert., vol. 6, p. 236. [Ety. digcm, a flat, round plate; the termination inu», implying resemblance.] Circular, longitudinally or transversely oval; dorsal valve conical, with apex inclined toward the posterior margin; ventral valve opercular, flat, or partly convex, perfo- rated by a nar- row, oval, longi- tudinal slit, reaching to near the posterior margin, and placed in the middle of an oval depressed disk; sur- face smooth, striated from the apex to the margin, or having con- centric lines of p^rowth produced in foliaceous expansions; structure horny, and perforated by minute tubuli. Type D. ostreoides. acadica, see Stenotheca acadica. alleghania. Hall, 1860, 13th Rep. N. Y. St. Mus. Nat. Hist., p. 77, and Pal. N. Y., vol. 4, p. 25, Chemung Gr. ampla. Hall, 1867, Pal. N. Y., vol. 4, p. 17, Oriskanv sandstone ''lo. 661.—Dlicliia«Htreoi(les, 2dlani. u, Umbo;/, foramen ; : Vmr^ry^aJA /»* T\ «i anterlOF HUductors; A, posteflor adductors; c, c, piotructdr sliil rroposea insieaa oi u. ing muscleH;»-, retractor muscleH. grandis of 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 Mill
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Keywords: ., boo, bookcentury1800, booksubjectgeology, booksubjectpaleontology
