ROBERT F. DAMON 



Begs to call especial attention to an interesting series of Models of the 

 right half of the Skulls (cranium and mandible) of 



HYRACOTHERIUM, MESOHIPPUS, HIPPARION, 



designed to illustrate the ancestry of the Horse. 



The Models have been made under scientific supervision, with all 

 possible regard to accuracy of form and dimensions, and are carefully 



coloured. 



With each of the above Models is supplied a Set of the Eight Upper 

 Cheek Teeth to show the Crowns. 



Hipparion. 



MesoMppus. 



Hyracotherium. 



Series of Right Upper Cheek Teeth showing grinding surface 



(Hyracotherium, Mesohippus, Anchitherium, Hipparion, and 



Horse). 



Photographs of the above will be forwarded on application. 



Also a series of Casts and Models of Feet (Fore and Hind) illustrating 

 the descent of the Horse : — 



Hyracotherium veniicolum, Cope. Figured in Report of U.S. Surr. 



Territ. (1883). Wasatch Eocene, Wind River, Wyoming. 

 Protorohippus venticolus. Cope, Eocene, Tertiary of Dakota. 

 Mesohippus Bairdi. Loc. as above. 

 Mesohippus intermedius, Loc. as above. 

 Anchitherium equinum, Scott. Loc. as above. 

 Protohippus sejunctus. Cope. Loc. as above. 

 Hipparion gracilis. Lower Pliocene, Pikermi, Athens. 



R. F. D. would also invite attention to the following highly interesting 



and somewhat related spemniens : — 

 Phenacodus primsevus, Cope. Half-skull. Original figured and 



described in Report of U.S. Geol. Surv. Territ. (1884). Wasatch 



Eocene, Wyoming. 

 Fore and hind foot from same specimen. 

 Onohippidium Munizi, Moreno. Half-skull (slightly restored). 



Figured by K. Lvdekker in " Ptilaeontologia Argentina " (189i}), 



From the Lower Pampean Deposits, Loberia, Buenos Ayres. 



Price for the complete Set^ £25, 



A COMPLETE SET OF CA5TS SENT ON APPLICATION. 



