Key to the Chiroptera
           
 
 Terminal one-third portion of tail projecting conspicuously beyond the tail membrane (Fig. 13a); prominent notch in hard palate round in shape because of inwardly projecting incisors (Fig. 14a) (Molossidae)
   
 Terminal one-third portion of tail included in the tail membrane for almost its entire length (Fig. 13b); notch in hard palate U-shaped (Fig. 14b) (Vespertilionidae)
 
           
Artiodactyla
 - 
Carnivora
 - 
Chiroptera
 - 
Didelphimorphia
 - 
Insectivora
 - 
Lagomorpha
 - 
Rodentia
 - 
Xenarthra
Scientific Names - Common Names