Class Mammalia Linnaeus, 1758 - mammals
Order Rodentia Bowdich, 1821 - rodents
Suborder Sciurognathi (Tullberg, 1899)
see Suborder Sciuromorpha Brandt, 1855
Family Sciuridae Batsch, 1788 - squirrels, chipmunks, marmots, and prairie dogs
Subfamily Sciurinae Batsch, 1788 - tree and ground squirrels
Genus Cynomys Rafinesque, 1817 - prairie dogs
1 Cynomys gunnisoni (Baird, 1855) - Gunnison's prairie dog
2 Cynomys leucurus Merriam, 1890 - white-tailed prairie dog
3 Cynomys ludovicianus (Ord, 1815) - black-tailed prairie dog
4 Cynomys mexicanus Merriam, 1892 - Mexican prairie dog
5 Cynomys parvidens J.A. Allen, 1905 - Utah prairie dog
6 Subgenus Leucocrossuromys Hollister, 1916
7 Subgenus Cynomys Rafinesque, 1817