9o ORIGIN AND CLASSIFICATION 



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3. Choeropotamidae — Chceropotamus. 



4. Anthracotheriidae — Anthracothere. 



5. Merycopotamidae — Merycopotainus. 



6. Cotylopidse — Oreodonts. 



7. Anoplotheriidae — Anoplothere. 



8. Dichodontidae — Dichodon. 



Tragulina — Chevrotains. 

 TragulidoB — Clievrotains. 



Tylopoda — Camels. 



Camelidce — Camels and Llamas. 



Poebrotheriidae — Poebrotherium. 



Pecora — True Ruminants. 

 Cervidce — Deer. 

 Giraffidce — Giraffe. 

 Antilocapridce — Prong-buck. 

 Bovidce — Sbeep, Cattle, etc. 



Perissodactyla — Perissodactyles. 

 Tapiridee — Tapirs. 

 Lophiodontidae — Loplnodonts. 

 Palaeotheriidae — Palieotheres. 

 Eqwidce — Horses. 

 Rhinocerotidce — Rhinoceroses. 

 Lambdotheriidae — Palaeosyops. 

 Chalicotheriidae — Chalicothere. 

 Titanotheriidae — Titanotbere. 

 Macraucheniidae — Macrauchenia. 



TOXODONTIA— Toxodonts. 

 Toxodontidae — Toxodon. 

 Typotheriidas — Typothere. 



Suborder 4. CONDYLARTHRA 



Fam. 27. Periptychidae — Periptychus. 



28. Phenacodontidae — Phenacodus. 



29. Meniscotheriidae — Meniscothere. 



Suborder 5. Hyracoidea — Hyraces. 

 Fam. 30. Hyracidce — Hyrax. 



Suborder 6. AMBLYPODA. 



Fam. 31. Pantolambdidae — Pantolambda. 



32. Coryphodontidas — Coryphodon. 



33. Uintatheriidae — Uintathere. 



Suborder 7. Proboscidea — Proboscideans. 



Fam. 34. Dinotheriidae — Dinotbere. 

 35. Elephantidce — Elephants. 



