Class [Mammalia] Linnaeus, 1758 - mammals
   Order Rodentia Bowdich, 1821 - rodents
     Family Geomyidae Bonaparte, 1845 - pocket gophers
       Genus Pappogeomys Merriam, 1895 - Alcorn's and Buller's pocket gophers
         1 Pappogeomys alcorni Russell, 1957 - Alcorn's pocket gopher
         2 Pappogeomys bulleri (Thomas), 1892 - Buller's pocket gopher
         3 Pappogeomys castanops (Baird, 1852) - yellow-faced pocket gopher
         4 Pappogeomys fumosus (Merriam, 1892) - smoky pocket gopher
         5 Pappogeomys gymnurus (Merriam, 1892) - Llano pocket gopher
         6 Pappogeomys merriami (Thomas, 1893) - Merriam's pocket gopher
         7 Pappogeomys neglectus (Merriam, 1902) - Queretaro pocket gopher
         8 Pappogeomys tylorhinus (Merriam, 1895) - Taylor's pocket gopher
         9 Pappogeomys zinseri (Goldman, 1939) - Zinser's pocket gopher