. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. 492 TA. [ IVA cymbula, ilflll, 1870, Prelim. Notice l^'^r^. teriorly, rounded in front, subuquivalvc, both valvt'B convex; pOBterior ^u,^ slender, produced, anterior one rib^.litc or drawn back between the b«Hk\ in „ deep lunule; no bysral emajKinaiidn, but a little gaping in the lunule: um. cular impreeslons faint; cardinal iinu narrow, with few longitudinal caiiiliiuc furrows; hinge edentulo
. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. 492 TA. [ IVA cymbula, ilflll, 1870, Prelim. Notice l^'^r^. teriorly, rounded in front, subuquivalvc, both valvt'B convex; pOBterior ^u,^ slender, produced, anterior one rib^.litc or drawn back between the b«Hk\ in „ deep lunule; no bysral emajKinaiidn, but a little gaping in the lunule: um. cular impreeslons faint; cardinal iinu narrow, with few longitudinal caiiiliiuc furrows; hinge edentulous. Type M. longippina. auricula, Stevens, 1858, (Gervillin iiuric- ula,) Am. Jour. Sci. and Arts, I'd str. vol. 26, I). 266, Coal Meas. gibbosa. Meek & Worthen, 1866, Proc. Chi. Acad. Hci., p. 20, Coal Meas. longispina. Cox, 1857, (Gerviliia longispi n a,) Geo. Sur. Ky., vol. 3, p. 668, Fio. ill Coal Meas. gibbosa. marian. White, 1874. Rep. Invert. Iosh,, p. 22, and Geo. Sur. W. 100th Mer„ vol. 4, p. 151, Carboniferous. MoNOTis, Bronn, 1824, System Urweltlichir Konchvlien. [Ety. monos, one ; om, oto, ear.] Obliquely oval, compressed, ra- diated; anterior side short, rounded; posterior slighty eared. Type M. na- linaria. elevata, see Panenka elevata. gregaria, Meek & Worthen, 1870, Proc. Acad. Nat. Sci. Phil., p. 38, and Geo Sur, HI., vol. 5, p. 573, Coal halli, Swallow, 1858, Trans, St. Louis Acad. Sci., vol. 1, p. 185, Permian Gr. hawni. see Pseudomonotis hawni. pouhani, see Panenka poulsoni. princeps, see Aviculopecten princeps. radialis, Phillips, 1834, (Pecten radialis,) see Pcseudomonotis radialis. radians, see Panenka radians. septentrionalis, Haughton, 1857, Jour. Roy. Dub. Soc, vol. 1, (?) Gr. apeluncaria, Schlotheim, 1816, Denkschrif- ten d. k. Ac. d. Wiss. zu Munclien, p. 30, (Gryphites speluncarius,) rerniian Gr. Prooably not American. variabilis, Swallow, 1868, Trans. St. Louis Acad. Sci., vol. 1, p. 187, Permian (ir, Myalina, DeKoninck
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