Key to the Carnivora
           
 
 Form cat-like; rostrum shortened; bulla divided internally by a bony septum; molars with shearing rather than grinding surfaces; only one upper and lower molar
   
Form dog-like; rostrum more elongate; bulla not divided by a bony septum; molars with both shearing and grinding surfaces; never only one upper and lower molar 
 
           
Artiodactyla
 - 
Carnivora
 - 
Chiroptera
 - 
Didelphimorphia
 - 
Insectivora
 - 
Lagomorpha
 - 
Rodentia
 - 
Xenarthra
Scientific Names - Common Names