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 Orthogeomys Merriam, 1895 - taltuzas Orthogeomys lanius (Elliot), 1905 - big pocket gopher