. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. 618 BATRAC HI A. [amp.âBOI,. Ahphibamus, Cope, 1865. Proc. Acad. Nat. Sci. Phil,, p. 134. [Ety. amphi, both; hama, a step; from its two modes of. /( inous; neural spines of caudal verte- brae well developed ; (?) centra. Type A. grandiceps. grandiceps. Cope, 18(>5, Proc. Acad. Nat. Sci. Phil., p. 134, and Geo. Sur. 111., vol. 2, p. i;», Coal Meas. Anisodexis, Cope, 1882, Piil. Bull. No. 35, and Proc. Am. Ph
. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. 618 BATRAC HI A. [amp.âBOI,. Ahphibamus, Cope, 1865. Proc. Acad. Nat. Sci. Phil,, p. 134. [Ety. amphi, both; hama, a step; from its two modes of. /( inous; neural spines of caudal verte- brae well developed ; (?) centra. Type A. grandiceps. grandiceps. Cope, 18(>5, Proc. Acad. Nat. Sci. Phil., p. 134, and Geo. Sur. 111., vol. 2, p. i;», Coal Meas. Anisodexis, Cope, 1882, Piil. Bull. No. 35, and Proc. Am. Phil. Soc, p. 4r)9. [Ety. ani808, uiie(|iial; dex\», a bite.] Teeth on premaxillary; maxil- lary, and dentary bones of unequal lengths, some very large, others very small; dentinal inflections straight, nearly reaching tlie pulp-cavity; cranial bones sculptured; ver- tebru! rhachitomous. Type A. imbricarius. imbricarius. Cope, 1882, Pal. Bull. No. 35, iuvi Proc. Am. Phil. Soc, p. 459, Permian. AacTiyEOBELUs, Copc, 1877, Proc. Am. Phil. Soc, vol. 17, p. 192. [Ety. archaios, ancient; belos, a weapon.] Maxillary bone with a large, hol- low tooth, with, two opposite shallowgrooves at the base; crown hollow; skeleton un- known. Type A. velli- oatas. vellicatus, Cope, 1877, Proc. Am. Phil. Soc, vol. 17, p. 192, Per- mian. Bapiibtes, Owen, 1853, Jour. Geo. Soc. London, vol. 10, p. 207. [Ety. bapto, I dip or dive, a diving animal.] Teeth conical, curved; outer series one or two lines in diameter, inner series three lines or more; implanted and anchy- losed in shallow sockets; lower third of teeth longitudinally striated; cranial bones corru- gated ; head broad. Type B. planiceps. minor, Dawson, 1870, Can. Nat. and Geol., Coal Meas. planiceps, Owen, 1853, progressing, swimming, and walking,] j Jour. Geo. Soc. I^ndon, vol. 10, p. 207, Teeth small, simple, equal on margins i and Acad. Geol., p. 359, Coal Meas. of jaws; sclerotic plates on eye; table â Bolosaurus, Cope, 1878, Pa
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