152 THE WHITE RIVER BADLANDS 



Perissodactyla. 



Hyracodontidae. 



Hyracodon nebrascensis Leidy. 



Hyracodon major Scott and Osborn. Mus. Comp. Zool., 

 Bull., vol. 13, 1887, p. 170. So. Dak.? 

 Amynodontidae. 



Metamynodon planifrons Scott and Osborn. Mus. Comp. 

 Zool., Bull., vol. 13, 1887, pp. 165-169. So. Dak. 



Rhinocerotidae. 



Caenopus (Subhyracodon) occidentalis Leidy. 



Caenopus (Subhyracodon) copei Osborn. Am. Mus. Nat. 



Hist., Mem., vol. 1, 1898, pp. 146-150, (Aceratherium). 



So. Dak. 

 Caenopus (Subhyracodon) simplicidens Cope. 

 Leptaceratherium trigonodum (Osborn and Wortman). 

 "Hyracodon" planiceps Scott and Osborn. Mus. Comp. 



Zool., Bull., vol. 13, 1887, pp. 170-171. So. Dak. 

 Lophiodontidae. 



Colodon (Mesotapirus) procuspidatus Osborn and Wortman. 



Am. Mus. Nat. Hist., Bull., vol. 7, 1895, pp. 362-364. So. 



Dak. 

 Colodon (Mesotapirus) dakotensis Osborn and Wortman. 



Am. Mus. Nat. Hist., Bull., vol. 7, 1895, pp. 362-364. 



So. Dak. 

 Colodon (Mesotapirus) longipes Osborn and Wortman. Am. 



Mus. Nat. Hist., Bull., vol. 7, 1895, p. 366. So. Dak. 

 Tapiridae. 



Protapirus simplex Wortman and Earle. Am. Mus. Nat. 



Hist., Bull., vol. 5, 1893, pp. 168-169. So. Dak. 

 Equidae. 



Mesohippus bairdi Leidy. 



Mesohippus ©bliquidens Osborn. Am. Mus. Nat. Hist., Bull., 



vol. 20, 1904, p. 173. So. Dak. 

 Mesohippus trigonostylus Osborn. Am. Mus. Nat. Hist., 



Mem., vol. 2, pt. 1, (new series) 1918, pp. 47-48. So. Dak. 



Artiodactyla. 



Elotheridae ( Entelodontidae ) . 



Elotherium (Enteloden) mortoni Leidy. 



Elotherium (Entelodon) ingens Leidy. Acad. Nat. Sci., 

 Phila., Proc, vol. 8, 1856, pp. 164-165. Mauv. Terres. 

 Dicotylidae (Tagassuidae). 



Perchoerus probus Leidy. Acad. Nat. Sci., Phila., Proc, 



vol. 8, 1856, p. 165. Mauv. Terres. 

 Perchoerus nanus (Marsh). Am. Jour. Sci., vol. 48, 1894, 

 p. 271, (Thinohyus). So. Dak. 

 Anthracotheridae. 



Anthracotherium curtum (Marsh). Am. Jour. Sci., vol. 47, 



1894, p. 409, Heptacodon. So. Dak. 

 Hyopotamus (Ancodon) rostratus Scott. Acad. Nat. Sci., 

 Phila., Jour., vol. 9, 189 4, Appendix, p. 536. So. Dak. 

 Leptochoeridae. 



Leptochoerus spectabilis Leidy. Acad. Nat. Sci., Phila., 



Proc, vol. 8, 1856, p. 88. Mauv. Terres. 

 Lepthochoerus gracilis Marsh. Am. Jour. Sci., vol. 48, 1894, 

 pp. 271-273. So. Dak. 



