Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Subdivision Bilateralia
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             Class Mammalia Linnaeus, 1758 - mammals
               Subclass Eutheria Gill, 1872 see Infraclass Eutheria Gill, 1872
                 Order Rodentia Bowdich, 1821 - rodents
                   Suborder Sciuromorpha Brandt, 1855
                     Superfamily Geomyoidea Bonaparte, 1845
                       Family Geomyidae Bonaparte, 1845 - pocket gophers
                         Genus Thomomys Wied-Neuwied, 1839 - western pocket gophers
                           Thomomys bottae (Eydoux & Gervais, 1836) - Botta's pocket gopher
                           Thomomys mazama Merriam, 1897 - western pocket gopher
                           Thomomys monticola J.A. Allen, 1893 - mountain pocket gopher
                           Thomomys talpoides (Richardson, 1828) - northern pocket gopher
                           Thomomys umbrinus (Richardson, 1829) - southern pocket gopher