Key to the Rodentia
		Tail obviously longer than head and body; last upper molar with worn cusps forming an E-shape (Fig. 52a)						Tail shorter than (may be equal to) head and body length; last upper molar with worn cusps forming a C-shape (Fig. 52b)
Artiodactyla  -  Carnivora  -  Chiroptera  -  Didelphimorphia  -  Insectivora  -  Lagomorpha  -  Rodentia  -  Xenarthra Scientific Names - Common Names