分子系統学
The smoky pocket gopher ("Cratogeomys fumosus") is a species of rodent in the family Geomyidae. It is endemic to Mexico (Querétaro). Its natural habitat is subtropical or tropical dry lowland grassland. Molecular phylogenetics has revealed that this species also includes the animals formerly separated as "C. gymnurus", "C. neglectus", "C. tylorhinus" and "C. zinseri".