110 



CLASSIFICATION OF THE ANIMAL KINGDOM. 



Fig. 98. Cetacea. Spermaceti Whale (Physeter macrocephalus). 



OEDER IV. UNGULATA. 



Section Perissodactyla (Odd-toed Ungulates). 

 Fam. a. ""Coryphodontia. Coryphodon. 

 Fam. b. Rhinocerotidse. Rhinoceros. 

 Fam. c. Tapiridce. Tapirus (Tapir). 

 Fam. d. """Brontotheridse. Brontothermm. 

 Fam. e. ^Palseotheridse. Palceotherium. 

 Fam. /. ~ /c Macrauchenidse. Macrauchenia. 

 Fam. g. Equidse. Equus (Horse), Asinus (Ass, Zebra), 

 *0rohippus, *Hipparion. 



Section Artiodactyla (Even-toed Ungulates). 

 Sub-ord. 1. Omnivora (Bunodonta). 



Fam. a. Hippopotamidae. Hippopotamus. 



Fam. b. Suida. Su>s (Pig), Dicotyles (Peccary), Phaco- 



chcerus (Wart-hog). 



Fam. c. *Anoplotheridse. Anoplothcrium. 

 Fam. d. *0reodontida3. Oreodon. 



Fig. 99. Grinding surface of the molar and pnemolar teeth of a Peccary (Dicotyles labi- 

 attis), showing the bunodont tj"pe of dentition. (After Giebel.) 



