Key to the Insectivora
           
 
 Size very small; color brown above, whitish below; four unicuspid teeth (Fig. 12b); skull light and delicate
   
 Size larger; color brownish or gray; unicuspids three or five, not four (Fig. 12a, c)
 
           
Artiodactyla
 - 
Carnivora
 - 
Chiroptera
 - 
Didelphimorphia
 - 
Insectivora
 - 
Lagomorpha
 - 
Rodentia
 - 
Xenarthra
Scientific Names - Common Names