Key to the Rodentia
           
 
 Incisors with two grooves on anterior face (Fig. 44a); claws on forefeet proportionately very large; color gray, brown, reddish, or reddish yellow
   
 Incisors with one groove on anterior face (Fig. 44b); claws on forefeet proportionately smaller; color brownish yellow, yellowish on side of face
 
           
Artiodactyla
 - 
Carnivora
 - 
Chiroptera
 - 
Didelphimorphia
 - 
Insectivora
 - 
Lagomorpha
 - 
Rodentia
 - 
Xenarthra
Scientific Names - Common Names