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 HOME --> CLASS MAMMALIA
 --> ORDER RODENTIA
 --> SUBORDER CASTORIMORPHA
 --> FAMILY Geomyidae 
 --> GENUS Thomomys
 --> SUBGENUS Megascapheus
 --> SPECIES umbrinus
				
  SUBSPECIES Thomomys (Megascapheus) umbrinus umbrinus 
				
| Author: | Richardson, 1829. |  | Citation: | Quadrupeds, in Fauna Boreali-Americana, 1: 202. |  | Type Locality: | Originally given as Cadadaguios, SW Louisiana, but restricted to Mexico, Veracruz (probably Puebla), vicinity of Boca del Monte, by Bailey (1906). |   |  
  |      |  Synonyms: 
		
		albigularis Nelson and Goldman, 1934 martinensis Nelson and Goldman, 1934 orizabae Merriam, 1893 peregrinus Merriam, 1893 tolucae Nelson and Goldman, 1934 vulcanius Nelson and Goldman, 1934
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