ILLUSTRATIONS xix 



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I. Protoreodon medius Peterson. Fragmentary skull and jaw (HT) 313 



Protoreodon faradoxicus (Scott). Skull and jaw (HT). 

 Protoreodon farvus Scott & Osborn. Skull and jaw (PT). 

 Mcrycoidodon affinis (Leidy). Fragmentary skull (HT). 

 Merycoidod on gracilis (Leidy). Skull and jaw (PLT). 

 Oreonetes ancefs (Douglass). Skull and jaw (PTs). 

 Limnenetes flatycefs Douglass. Skull (GHT). 

 Eucrotafhus jacksoni Leidy. Fragmentary cranium (GHT). 



II. Oreonetes ancefs (Douglass). Skull and rami (GHT and PT) 315 



Merycoidodon culbertsonii Leidy. Skull and jaws of juvenile. 

 Mcrycoidodon culbertsonii Leidy. Skull and jaw. 

 Merycoidodon macrorhinus (Douglass). Skull (HT). 



III. Merycoidodon culbertsonii fericulorum (Cope). Skull and jaw (HT) 317 



Merycoidodon gracilis coloradoensis (Cope). Skull (HT). 



Eforeodonleftacanthus (Cope). Skull (HT). 



IV. Eforeodon dickinsonensis (Douglass). Skull (HT) 319 



Eforeodon Helena? (Douglass). Skull and jaws (HT). 



V. Eforeodon longifrons (Cope). Skull (HT) 321 



Eforeodon major ccdrensis Matthew. Skull (HT). 



VI. Eforeodon major (Leidy). Skull (AT) 323 



Eforeodon major relictus Loomis. Skull (HT). 



VII. Eforeodon major cheeki Schlaikjer. Skull and jaw (HT) 325 



VIII. Eforeodon facificus (Cope). Skull (HT) 327 



Eforeodon trigonocefhalus (Cope). Skull (HT). 



IX. Eforeodon montanus (Douglass). Skull (HT) 329 



Mesoreodon chelonyx Scott. Skull and jaw (GHT). 



X. Promerycochoerus carrikeri Peterson. Rami (PLT) 331 



Promerycochcerus hollandi Douglass. Skull (HT). 



Mesoreodon ?negalodo7i Peterson. Palate and rami (HT and PT). 



XL Mesoreodon chelonyx Scott. Shoulder area and hyoid apparatus (GHT) 333 



Mesoreodon intermedius Scott. Incomplete manus and pes (HT). 



XII. Promerycochcerus gregoryi Loomis. Skull and rami (HT) 335 



XIII. Promerycochcerus gregoryi loomisi Schlaikjer. Skull and ramus (HT) 337 



Promerycochcerus macrostcgus (Cope). Skull (HT). 



XIV. Promerycochoerus hollandi hatcheri Douglass. Skull and rami (HT) 339 



XV. Promerycochoerus erythrocefs Stock. Fragmentary skull (HT) 341 



Promery cochcerus hollandi Douglass. Skull and rami (HT). 



XVI. Promerycochcerus hollandi minor Douglass. Skull and rami (HT) 343 



XVII. Promerycochoerus montanus (Cope). Skull (HT) 345 



XVIII. Promerycochcerus montanus grandis Douglass. Skull and rami (HT) 347 



XIX. Promerycochcerus thomsoni Loomis. Skull (HT and PT) 349 



