Key to the Chiroptera
           
 
Forearm 36-41 mm in length; ears and face dusky but not heavily pigmented and not jet black; hair grayish with pinkish cinnamon tips; condylobasal length averages 13.96 mm; found only in eastern Oklahoma 
   
 Forearm 31-36 mm in length; ears and facial mask jet black; color glossy brown; hair bicolored, slaty at base; condylobasal length averages 12.6 mm
 
           
Artiodactyla
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Carnivora
 - 
Chiroptera
 - 
Didelphimorphia
 - 
Insectivora
 - 
Lagomorpha
 - 
Rodentia
 - 
Xenarthra
Scientific Names - Common Names