Class [Mammalia] Linnaeus, 1758 - mammals
Count: [*] 21o;132f;1061g;4316s; ‡1f;5g;38s
   Order Rodentia Bowdich, 1821 - rodents
  Count: [*] 29f;399g;1788s; ‡1g;16s
     Family Sciuridae Batsch, 1788 - squirrels, chipmunks, marmots, and prairie dogs
    Count: [*] 49g;259s
       Subfamily Sciurinae Batsch, 1788 - tree and ground squirrels
      Count: [*] 35g;215s
         Genus Tamias Illiger, 1811 - chipmunks
        Count: [*] 21s
           Tamias quadrivittatus (Say, 1823) - Colorado chipmunk
          Count: -