Class Mammalia Linnaeus, 1758 - mammals Order Rodentia Bowdich, 1821 - rodents Suborder Sciurognathi (Tullberg, 1899) see Suborder Sciuromorpha Brandt, 1855 Family Geomyidae Bonaparte, 1845 - pocket gophers Genus Thomomys Wied-Neuwied, 1839 - western pocket gophers Thomomys mazama Merriam, 1897 - western pocket gopher