TYPE-SPECIMENS OF FOSSIL VEKTEBKATES. 35 



2727. Dryolestes vorax Marsh. Type. 



Nearly complete lower jaw with teeth. Morrison (Juras- 

 sic). Como, Wyoming. 



Marsh, Amer. Journ. Sci. (3), XVIII, 1879, p. 215; XXXIII, 1887, 

 pi. 9, figs. 3, 4. 



1 137. Ectagonus glififormis Cope. Type. 



Portions of teeth associated with other fragments. Eocene. 

 New Mexico. 



Cope, App. FF 3 , Ann. Rept. Chief Engineers, in Rept. Sect'y. 

 War, II, Pt. II, 1874, p 592; Rept. U. S. Geogr. Surv. W. 100th 

 Merid., IV, Pt. II, 1877, p. 160, pi. 41, figs. 1-7. 



1 102. Ectagonus novomehicanus (Cope). Type. 



Cope, Rept. U. S. Geogr. Surv. W. 100th Merid., IV, Pt. II, 1877, 

 p. 159, pi. 40, figs. 34-39- 



See Calamodon novomehicanus. 



189. Elephas columbi Falconer. Plesiotype. 



Left ramus. Pliocene. Peace Creek, Florida. 



Leidy, Trans. Wagner Free Inst. Sci. Phila., II, 1889, pi. 8, fig. 2. 



185. Elephas imperator I^eidy. - Type. 



Fifth upper molar. Pliocene. Nebraska River, Nebraska. 



Leidy, Proc. Acad. Nat. Sci. Phila., 1858, p. 10; Journ. Acad. Nat. 

 Sci. Phila. (2), VII, 1869, p. 255, pi. 25, fig. 3. 



146. Elotherium mortoni (Peidy). See Archseotherium mortoni. 



524. Elotherium mortoni (Peidy) ? Plesiotype. 



Incisor tooth. White River (Oligocene). Twenty miles 

 southeast of Cheyenne, Wyoming. 

 Leidy, Rept. U. S. Geol. Surv. Terr., I, 1873, pi. 7, figs. 28, 29. 



783. Elotherium mortoni. See Arctodon sp. undet. and Archseo- 

 therium robustum. 



2129. Ennacodon affinis (Marsh). See Enneodon affinis. 



2130. Ennacodon crassus (Marsh). See Enneodon crassus. 



2129. Enneodon affinis Marsh. Type. 



Left ramus of jaw. Morrison (Jurassic.) Wyoming. 

 Marsh, Amer. Journ. Sci. (3), XXXIII, 18S7, p. 339. 

 = Ennacodon affinis. 



2130. Enneodon crassus Marsh. Type. 



Right ramus of jaw containing seven teeth. Morrison. 

 (Jurassic.) Wyoming. 

 Marsh, Amer. Journ. Sci. (3), XXXIII, 1887, p. 339, pi. 10, fig. 4. 

 = Ennacodon crassus. 



1079. Eohippus angustidens (Cope). See Orohippus angustidens 

 and Hyracotherium angustidens. 



