Key to the Rodentia
           
 
 Greatest length of skull more than 28 mm; body usually robust and 30 g or more
   
 Greatest length of skull less than 28 mm; body smaller and usually less than 30 g
 
           
Artiodactyla
 - 
Carnivora
 - 
Chiroptera
 - 
Didelphimorphia
 - 
Insectivora
 - 
Lagomorpha
 - 
Rodentia
 - 
Xenarthra
Scientific Names - Common Names