Hyraeotherium, Protorokippus, Orohippus. 



E. Hyracotheryus, Lemoine (1880), 1891. 



773 



4794. f dichobunoYdes, Lem.. Ass. Franc, avanc fEocaen. infer. 



Sciences. 1880. p. 11; Bull. Soc. Geol., Europa, 



XIX. 1891. p. 286, pl. 11, fig. 121. Gallia Orient. 



954. Protorohippus, Wortinan, 1896. 

 Hyracotherium, p.. Cope (nec Owen), 1881. 



4795.fventicolus, Cope, Bull. Geol. Surv., 1881, fEocaen. med. 



p. 198 (part.); Tert. Tert.. 1884, p. 635, Wyoming 



pl. 49 a. b. c (specim. ex Wind-Kiver-beds (Wind-River). 



tantuni): Amer. Xatur., 1887, p. 994, pl. 

 30 ; Woi-tm.. Bull. Amer. Mus., 1896, p. 

 105. fig. 14, 15, pl. 2, fig. D et N. 



955. tOrohippus, Marsh (1872), 1874, emend., 1876. 



Lophiodon, p., Marsh, 1871; Orotherium, Marsh, 1872 (nec Aymard, 

 1848); Pachynolophus, p., Cope; Helohippus, Marsh, 1892. 



A. Helohippus, Marsh, 1892. 



4796. tpumilus. Marsh. Amer. Journ. Sc, 1871, 

 II. p. 38; 1872. IV. p. 207; 1874, VII, 

 p. 247; 1876, XII, p.491 (genus); 1892, 

 XLIII. p. 353 (subg.j; Osborn, Trans. Am. 

 Phil. Soc, 1889, p. 507 (corrigenda) ; 

 Wortman, Bull. Am. Mus.. 1896, p. 108, 

 fig. 18 (genus), pl. 2. fig. E, F-N; Earle, 

 Amer. Xat. 1896. p. 135 (genus). 



tEocaen. med. 



America sept. 



Wyoming (Bridger). 



B. Orohippus, p. d. 



4797.tmajor. Marsh (nec Cope), Amer. Journ. 

 3c, 1874, VII, p. 248. 



4798. tsylvaticus, Leidy, Ext. Vert.Fauna, 1873, 

 p. 69, pl. 6, fig. 33—35 (Lophioth.); Plio- 

 loph. et Orotherium, p., Cope. 



4799.tBallardi, Marsh, Am. Journ. Sc, 1872, H, 

 p. 40; Leidy, Ext. Vert. Fauna, 1873 

 (Lophiotherium). 



tEocaen. med. 

 Wyoming (Bridger). 



tEocaen. med. 

 Wyoming (Bridger). 



tEocaen. med. 

 Wyoming (Bridger). 



