Order Rodentia - Family Geomyidae Author Wilson, Don E. Author Reeder, DeeAnn text 2005 The Johns Hopkins University Press Baltimore Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 2 859 870 book chapter 0-8018-8221-4 10.5281/zenodo.7316535 Cratogeomys gymnurus (Merriam 1892) [Geomys] gymnurus Merriam 1892 , Proc. Biol. Soc. Wash., 7: 166 . Type Locality: Mexico , Jalisco , Zapotlán (= Ciudad Guzmán), 4,000 ft. ( 1,219 m ). Vernacular Names: Llano Pocket Gopher . Subspecies: : Subspecies Cratogeomys gymnurus subsp. gymnurus (Merriam 1892) Subspecies Cratogeomys gymnurus subsp. imparilis (Goldman 1939) Subspecies Cratogeomys gymnurus subsp. russelli Genoways and Jones 1969 Subspecies Cratogeomys gymnurus subsp. tellus Russell 1953 Distribution: S and C Jalisco and NE Michoacan ( Mexico ). Conservation: IUCN – Lower Risk (lc) as Pappogeomys gymnurus . Discussion: Polytypic; subspecies reviewed by Russell (1968 b ) , but all are probably only geographic units of fumosus ( Demastes et al., 2002 ) .