. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. 470 LAMELLIBRANCHIA TA. [car.—" oblmiga, see Protomya oblonga. ovala, Hee Dexiobia ovata, parviro8tri», White, 1862, Proc. Bost. Soc. Nat. Hist., vol. 8, p. 31, syn. for Dexio- bia ovata. pellensiB, Worthen, 1884, Bull. No. 2, 111. St. Mus. Nat. Hiat., p. 16, and Geo. Sur. 111., vol. 8, p. 126, St. Louia Gr. radiata, see Cardiopais radiata. rhombotdea, Hall, see Gardiomorpha aub- rhomboidea. rhomboidea. S


. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. 470 LAMELLIBRANCHIA TA. [car.—" oblmiga, see Protomya oblonga. ovala, Hee Dexiobia ovata, parviro8tri», White, 1862, Proc. Bost. Soc. Nat. Hist., vol. 8, p. 31, syn. for Dexio- bia ovata. pellensiB, Worthen, 1884, Bull. No. 2, 111. St. Mus. Nat. Hiat., p. 16, and Geo. Sur. 111., vol. 8, p. 126, St. Louia Gr. radiata, see Cardiopais radiata. rhombotdea, Hall, see Gardiomorpha aub- rhomboidea. rhomboidea. Swallow, 1858, Trans. St. Louia Acad. Sci., vol. 1, p. 191, Per- mian Gr. rotunda, Hall, 1883, Pal. N. Y., vol. 5, pi. 63, figs. 17-20, refer flga. 18 and 19 to Paracyclaa rotunda, fig. 17 to Schizodua degener, and fig. 20 to S. patulua. subgloboaa. Meek, 1875, Ohio Pal., vol. 2, E. 304, Waverly Gr. orbicularia, Hall, 1843, (I''^ngu1'na sub- orbicularia,) Geo. Rep. 4th Diet. N. Y., p. 244, and Pal. N. Y., vol. 5, pi. 63, figa. 9-10, Portage Gr. Bubrhomboidea, Hall, 1877, lat Ed. Am. Pal. Foaa., p. 186, (propoaed inatead of Cypricarditea rhomboidea, in Geo. Rep. Iowa, p. 523, which was preoccu- pied,) Kinderhook Gr. textilia. Hall, 1883, Pal. N. Y., vol. 5, pi. 63, figa. 11-15, Chemung Gr. triangulata. Swallow, 1860, Trans. St. Louia Acad. Sci., vol. 1, p. 655, Waverly or Choteau Gr. trigonalia, Winchell, 1863, Proc. Acad. Nat. Sci., p. 15, Marshall Gr. undulata, Hall, 1883, Pal. N. Y., vol. 5, pi. 63, fig. 16, Portage Gr. (f) vetusta. see Cypricarditea vetusius. vindobonensis, Hartt, 1868, Acad. Geol., p. 304, Carboniferous. zonata, Hall, 1883, Pal. N. Y., vol. 5, pi. 63, fig. 5, Ham. Gr. Cardiopsib, Meek & Worthei, 1861, Proc. Acad. Nat. Sci. Phil., p. 144. [Ety. iardia, the heart; opsis, appearance.] Equivalve, somewhat inequilateral, ob- lique, ovate or cordiform, entirely closed; beaks elevated, incurved, di- rected anteriorly; cardinal margin short; rounding into


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