ROBERT F. DAMON 



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

 right half of the Skulls (cranium and mandible) of 



HYRACOTHEPJUM, 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 dimeusioas, and are carefully 



coloured. 



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

 Cheek Teeth to show the Crowns. 



Hipparion. 



Mesohippus. 



Hyracotherium. 



Series of Eight Upper Cheek Teeth showing grinding surface 



(Hyracotherium, Mesohippus, Anchitherium, Hipparion, an I 



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 venticolum, Cope. Figured in Report of U.S. Surv. 

 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 specimens : — 

 Phenacodus primaevus, Cope. H;ilf-skull. Original figured and 



deecribed 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 R. Lvdekker in " Palfeontologia Argentina " (1893). 



From the Lower Pampean Deposits, Loberia, Buenos Ayres. 



Price for the complete Set, £25. 



A COMPLETE SET OF CASTS SENT ON APPLICATION. 



