Key to the Rodentia
           
 
 Size large, body bulky, weight to 4.5 kg; face blackish, body grizzled brownish, legs and feet black; incisors white; skull with flat profile and postorbital processes projecting at right angles (Fig. 31b)
   
 Size medium to small, weight 1.4 kg or less; color not as above; incisor teeth pigmented; skull more arched in profile, postorbital processes projecting more posteriorly (Fig. 31a)
 
           
Artiodactyla
 - 
Carnivora
 - 
Chiroptera
 - 
Didelphimorphia
 - 
Insectivora
 - 
Lagomorpha
 - 
Rodentia
 - 
Xenarthra
Scientific Names - Common Names