. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. CRA.] HKACHIOPODA. U\ concava, Hall, 1867, (Leptocoeiia concava,) 10th Rep. N. Y. St. Mub. Nat. Mist., Fi(i 560.—Crelosplra concava. Magnifled view of spirals. l07,andPal. N. Y. niferouB Gr. vol. 3, p. 245, Cor- KiG. n,')!.—CoBlosptra dts- pai'llls. Dorsal aud ventral views. dichotoma, IIall, 1859, (Leptoccclia dichotoma,) Pal. N. Y., vol. 3, p. 452, O risk any sandBtone. dispariliB, Hall, 1852, ( A t r y p a
. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. CRA.] HKACHIOPODA. U\ concava, Hall, 1867, (Leptocoeiia concava,) 10th Rep. N. Y. St. Mub. Nat. Mist., Fi(i 560.—Crelosplra concava. Magnifled view of spirals. l07,andPal. N. Y. niferouB Gr. vol. 3, p. 245, Cor- KiG. n,')!.—CoBlosptra dts- pai'llls. Dorsal aud ventral views. dichotoma, IIall, 1859, (Leptoccclia dichotoma,) Pal. N. Y., vol. 3, p. 452, O risk any sandBtone. dispariliB, Hall, 1852, ( A t r y p a disparilis,) Pal. N. Y., vol. 2, p. 277, Niagara Gr. Crania, Retzius, 1781, SchriftenderBerliner Gesellschaft Naturforschende Freund, vol. 2, p. 72. [Ety. kranion, the upper part of a skull.] Shell circular, subquad- rate, transverse, or elongated, attached by its ventral valve to some foreign object; upper or dorsal valve more or less convex or conical; apex central or subcentral; surface smooth, spiny, radiated, or concentrically lined, and not unfrequently having the markings of the object to which the lower valve is attached; no articulating hinge or ligament, but valves held in place by four muscles; anterior adductor scars approximate and close to the center; posterior pair near the cardinal edge, and widely separated; struc*,ure calca- reous and tubular. Type 0. bratten- 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 Miller, S. A. (Samuel Almond), 1836-1897. Cincinnati : [s. n. ]
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Keywords: ., boo, bookcentury1800, booksubjectgeology, booksubjectpaleontology
