4 
Ungulata 
PAGI5 
.. 46 
a. Artiodactyla 
.. 46 
Bovidae 
.. 46 
Antilocapridae and Merycoidodontidae 
. . 47 
Giraffidae 
. . 47 
Cervidae 
.. 48 
Tragulidae 
.. 48 
Extinct Families 
.. 48 
Camelidae 
.. 48 
Hippopotamidae aud Suidae. . 
.. 48 
b. Perissodactyla 
.. 49 
Equidae 
.. 49 
Rhinocerotidae and Tapiridae 
.. 49 
Titauotheriidae, Lophiodontidae and Ohalicotheriidae 49 
c. Hyracoidea 
.. 49 
d. Proboscidea 
.. 50 
Sirenia and Cetacea. . 
.. 50 
Edentata 
51 
Marsupialia 
51 
Monotremata 
.. 51 
