Class [Mammalia] Linnaeus, 1758 - mammals
Order Rodentia Bowdich, 1821 - rodents
Family Geomyidae Bonaparte, 1845 - pocket gophers
Genus Thomomys Wied-Neuwied, 1839 - western pocket gophers
1 Thomomys bottae (Eydoux & Gervais, 1836) - Botta's pocket gopher
2 Thomomys bulbivorus (Richardson, 1829) - Camas pocket gopher
3 Thomomys clusius Coues, 1875 - Wyoming pocket gopher
4 Thomomys idahoensis Merriam, 1901 - Idaho pocket gopher
5 Thomomys mazama Merriam, 1897 - western pocket gopher
6 Thomomys monticola J.A. Allen, 1893 - mountain pocket gopher
7 Thomomys talpoides (Richardson, 1828) - northern pocket gopher
8 Thomomys umbrinus (Richardson, 1829) - southern pocket gopher