7U 



osborn: OLIGOCENE, MIOCENE, pliocene equid.e. 



Kalobatippus praestans Cope 1879. 

 Plates 5.6,10,12, 6.3, 51.10,14. Text Figs. 48, 51. 



Anchitherium proestans, Cope, E. D. "A New Anchitherium," Amer. Naturalist, Vol. XIII, No. 7, July, 1879, pp. 462-463, no 

 figure. " The Perissodactyla," Amer. Naturalist, Vol. XXI, No. 12, Dec. 1887, p. 1069, fig. 36. 



Horizon and Locality. — Summit of Upper John Day, Promeryeoehoerus zone. Name of collector not known. 

 Type. — Amer. Mus. 7269. Skull, jaws, tibia, and pes. Measurements: (Cope) "Length of molar series .118m.; 



Fig. 48. Kalobatippus proestans Cope, Amer. Mus. 7269, skull and jaws of type, and crown view of the superior grind- 

 ing series of the right side. Skull one-half natural size, teeth natural size. Skull drawings by B. Yoshihara. 



of true molars, .050; length anterior to molars, .061; width between last molars, .010; diameters of crown of second 

 true molar, fore and aft, .017, transverse, .022; length of tibia, .285; of metacarpal, .221." 

 Type figure. — Cope 1887, fig. 36, not reproduced here. 



Characters. — (Cope, 1879, pp. 462-463) " It is the largest species [of Anchitherium] yet found in America, and exhibits 



