. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. Fia. 849. — Modlella pygmeea. minor, Lea, 1852, Jour. Acad. Nat. Sci., 2d series, vol. 2, Coal Mens. Not deter- Fio. NTiU.—Modiola inodioltiH. ua, Anterior ad- <Iucl<)rs; a'a', poNterloraOductors; 'pf, pedal muscles ; mp, byHsal muBcles; /, foot; b, bysHua; )n, pullliil Ifiie. nevadensis, Walcott, 1885, Monogr. U. 8. Geo. Sur., vol. 8, p. 239, Subcarbonif- erous. obtusa, see Modiolopsis obtusa.
. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. Fia. 849. — Modlella pygmeea. minor, Lea, 1852, Jour. Acad. Nat. Sci., 2d series, vol. 2, Coal Mens. Not deter- Fio. NTiU.—Modiola inodioltiH. ua, Anterior ad- <Iucl<)rs; a'a', poNterloraOductors; 'pf, pedal muscles ; mp, byHsal muBcles; /, foot; b, bysHua; )n, pullliil Ifiie. nevadensis, Walcott, 1885, Monogr. U. 8. Geo. Sur., vol. 8, p. 239, Subcarbonif- erous. obtusa, see Modiolopsis obtusa. pooli, Dawson, 1868, Acad. Geol., p. 301, JjOW. Carb. Founded upon a small cast destitute of characters. prxcedens, see Mytilops prsecedens. wyomingenitis, Lea, 1852, Jour. Acad. Nat. Sci., 2d series, vol. 2, p. 205, Coal Meas. Not recognized, but probably an An- thracomya. MouiOLopsis, Hall, 1847, Pal. N. Y., vol. 1, p. 157. [Ety. Modiola, a genus of shells; opsis, appearance; from its resemblance to Modiola.] Equivalve, inequilateral, elongated, broader posteriorly; um- bones anterior; cardinal teeth short, oblique; single, deep, subcircular ante- rior muscular impression; ligament ex- ternal ; no area; surface concentrically lined. Type M. modiolaris. adrastia, Billings, 1862, Pal. Foss., vol. 1, p. 45, Black Riv. Gr. anodontoides, Conrad, 1847, (Cypricardites anodontoides,) Pal. N. Y., vol. 1, syn. for M. sinuata. arcuata, Hall, 1847, Pal. N. Y., vol. 1, p. 159, Trenton Gr. aviculoides. Hall, 1847, Pal. N. Y., vol. 1, p. 161, Trenton Gr. cancellata, Walcott, 1879, Trans. Alb. Inst., vol. 10, p. 22, Utica Slate Gr. capax, n. sp. Shell very large, oblong; cardinal and basal lines behind the beaks subparallel; basal margin slightly contracted by an undefined cincture arising below the beaks; posterior end broadly rounded; depressed in front of. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - c
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