Key to the Rodentia
           
 
 Body marked dorsally with five black stripes which do not encroach upon the rump; two lateral interspaces between lateral dark stripes are white; only one upper and one lower premolar on a side
   
 Body marked with five black stripes which do not encroach upon the rump; all four interspaces between dark stripes are white; two upper and one lower premolar on a side
 
           
Artiodactyla
 - 
Carnivora
 - 
Chiroptera
 - 
Didelphimorphia
 - 
Insectivora
 - 
Lagomorpha
 - 
Rodentia
 - 
Xenarthra
Scientific Names - Common Names