CLASS EEPTILIA. 



SUB-CLASS BATEACHIA. 



FAMILY COLOSTEIDiE.— Amphibamus, Colosteus, Sauropleura. 



FAMILY MOLGOPHIDJE.— Molgophis, Pleuroptyx. 



FAMILY PHLEGETHONTIIDyE.— Phlegethontia. 



FAMILY PTYONIID^.— Hyphasma, Oestocephalus, Ptyonius. 



FAMILY TUDITANID^.— Brachydectes, Ceraterpeton, Dendrerpeton, Eurythorax, 



Hylerpeton, Hylonomus, Leptophractus, Pelion, Tuditaiius. 

 ORDER PROTEIDA.— Cocytinus, Thyrsidium. 

 INCERT^ SEDIS. — Baphetes, Cheirotherium, Clepsysaurus, Collettosaurus, Eosaurus, 



Ornithichnites, Sauropus, Spheropezium, Thenaropus. 



Amphibamus, Cope, 1865, Proc. Acad. Nat. 

 Sci. Phil. [Ety. amphi, both ; bama, 

 a step ; from its two modes of pro- 

 gressing — swimming and walking.] 



grandiceps. Cope, 1865, Proc. Acad. Nat. 

 Sci. Phil., Coal Meas. [Sig. big- 

 headed.] 

 Baphetes, Owen, 1853, Jour. Geo. Soc. 

 London, vol. 9. [Ety. bapto, I dip or 

 dive — a diving animal.] 



minor, Dawson, 1870, Can. Nat. & Geol., 

 Coal Meas. [Sig. less.] 



planiceps, Owen, 1853, Jour. Geo. Soc. 

 ]^ondon, vol. 9, Coal Meas. [Ety. 

 flat-headed.] 

 Brachydectes, Cope, 1868, Proc. Acad. Nat. 

 Sci. Phil. [Ety. brachys, short ; dekles, 

 a biter.] 



newberryi. Cope, 1868, Proc. Acad. Nat. 

 Sci., Coal Meas. [Ety. proper name.] 



Ceraterpeton, Huxley. [Ety. keras, horn ; 



erpeton, reptile.] 

 punctolineatura, Cope, 1875,Ohio Pal., vol. 



2, Coal Meas. [Sig. puncture-lined.] 

 tenuicorne, Cope, 1875, Ohio Pal., vol. 2, 



Coal Meas. [Sig. slender-horned.] 

 Cheirotherium, Kaup, 1835, in Leonhard 



und Bronn, Neues Jahrbuch fur Min- 



eralogie. [Ety. cheir, the hand ; 



therion, beast.] 

 reiteri, Moore, 1863, Am. Jour. Sci. & 



Arts, 3rd ser., vol. 5, Coal Meas. [Ety. 



proper name.] 



Clepsysaurus, Lea, 1852, Jour. Acad. Nat. 

 Sci., vol. 2. [Ety. Mepsydra, a sand- 

 glass ; saurus, a lizard ; from the com- 

 pression laterally of the vertebrae 

 towards the center.] 

 pennsylvanicus, Lea, 1852, Jour. Acad. 

 Nat. Sci., vol. 2, Coal Meas. [Ety. 

 proper name.] 



Cocytinus, Cope, 1871, Proc. Am. Phil. Soc. 

 [Ety. kokytos, mythological name.] 

 gyrinoides. Cope, 1874, Trans. Am. Phil. 

 Soc, Coal Meas. [Sig. like a tadpole.] 



Collettosaurus, Cox, 1873, Geo. Sur. Ind. 

 [Ety. proper name; saurus, a lizard.] 

 indianensis. Cox, 1873, Geo. Sur. Ind., 

 Coal Meas. [Ety. proper name.] 



Colosteus, Cope, 1869, Trans. Am. Phil. 

 Soc. [Ety. kolos, short; osteon, a, bone.] 



crassiculatus, syn. for C. scutellatus. 



foveatus, 1869, Trans. Am. Phil. Soc., 

 Coal Meas. [Sig. pitted.] 



marshi, see Ptyonius marshi. 



pauciradiatus, Cope, 1874,Trans. Am. Phil. 

 Soc, Coal Meas. [Sig. few-lined.] 



scutellatus, Newberry, 1856, (Pygopterus 

 scutellatus) Proc Acad. Nat. Sci. Phil., 

 Coal Meas. [Sig. having a shield.] 

 Dendrerpeton, Owen, 1853, Quar. Jour. 

 Geo. Soc, vol. 9. [Ety. dendron, a 

 tree ; erpeton, a lizard ; from the pe- 

 culiar circumstances under which the 

 fossil reptile was found.] 



