Plate 8. Some of the men who have studied the White River Badlands. 

 " 9. Section showing divisions of the Age of Mammals. 

 " 10. A. and B. Rock slabs showing fossil bones in place. 

 " 11. A. Head of Hoplophoneus primaevus. 



B. Head of Syndyoceras cooki. 

 " 12. A. Restoration of head of Megacerops. 



B. Restoration of head of Smilodon. 

 " 13. A. Head of Daphoenus felinus. 



B. Heads of fossil rodents. 

 " 14. A. Head of Hyracodon nebrascensis. 



B. Head of Protapirus validus. 

 " 15. Skull of Caenopus (Aceratherium) occidentalis. 

 " 16. A. Head of Mesohippus bairdi. 



B. Head of Mesohippus bairdi compared with that of Equus- 

 caballus. 

 " 17. A. Right hind foot of Moropus elatus. 



B. Fore foot of Moropus elatus. 

 " 18. A. Right hind foot of Titanothere. 



B. Right fore foot of Titanothere. 



C. Right hind leg of Titanothere. 

 " 19. A. Upper teeth of Titanothere. 



B. Lower jaw of Titanothere. 

 " 20. Skull of Titanotherium ingens. 

 " 21. A. Head of Merycoidodon (Oreodon) gracile. 



B. Head of Merycoidodon {Oreodon) culbertsoni. 

 " 22. A. Skull of Eporeodon major. 



B. Left half of skull of Eporeodon major. 



C. Right half of skull of Eporeodon major. 

 " 23. A. Head of Protoceras celer. 



B. Skull of Protoceras celer (From above). 



C. Skull of Protoceras celer (From below). 

 " 24. A. Skeleton of Neohipparion whitneyi. 



B. Skeleton of Merycoidodon (Oredon) culoertsoni. 

 " 25. A. Restoration of Hyaenodon. 



B. Animals of the Fayum, Egypt. 

 " 26. A. Restoration of Diceratherium cooki. 



B. Restoration of Daphoenodon superbus. 

 " 27. Skeleton of Hoplophoneus primaevus. 

 " 28. Restoration of Hoplophoneus primaevus. 

 " 29. Restoration of Metamynodon planifrons. 



" 30. Group restoration of Metamynodon, Hydracodon, and Dinictis. 

 " 31. A. Skeleton of Hyracodon nebrascensis. 



B. Restoration of Moropus cooM. 

 " 32. Restoration of Moropus Elatus. 

 " 33. Restoration of Mesohippus bairdi. 

 " 34. Restoration of Neohipparion whitneyi. 

 " 35. Restoration of Titanotherium (Brontops). 

 " 36. Restoration of Brontotherium gigas. 



