Sigmodon minor Gidley 1922 (cotton rat)

Mammalia - Rodentia - Cricetidae

Synonyms: Sigmodon hilli Hibbard 1941, Sigmodon intermedius Hibbard 1937, Sigmodon medius Gidley 1922

Full reference: J. W. Gidley. 1922. Preliminary report on fossil vertebrates of the San Pedro Valley, Arizona, with descriptions of new species of Rodentia and Lagomorpha. Shorter contributions to general geology, 1922 131:119-131

Belongs to Sigmodon according to J. W. Gidley 1922

See also Albright 1999, Cassiliano 1999, Czaplewski 1990, Galusha et al. 1984, Harrison 1978, Hibbard 1941, Kurten and Anderson 1980, Martin 1974, Martin et al. 2002, Martin and Prince 1989, Mezzabotta 1997, Morgan and White 1995 and Tomida 1987

Sister taxa: Sigmodon alstoni, Sigmodon bakeri, Sigmodon chonensis, Sigmodon curtisi, Sigmodon hispidus, Sigmodon hudspethensis, Sigmodon libitinus, Sigmodon lindsayi, Sigmodon ochrognathus

Type specimens:

  • Sigmodon minor: USNM 10512, a mandible (Portion of a left lower jaw containing complete dentition )
  • Sigmodon hilli: Its type locality is Borchers, which is in a Blancan terrestrial horizon in the Crooked Creek Formation of Kansas.
  • Sigmodon intermedius: Its type locality is Rexroad KU Locality 2, which is in a Blancan terrestrial horizon in the Rexroad Formation of Kansas.
  • Sigmodon medius: USNM 10519, a partial skull (Portion of a right lq.wer jaw con- taining the complete dentition and an asso- ciated fragment of a right maxillary carrying the anterior two cheek teeth, possi).

Ecology: ground dwelling herbivore

Distribution:

• Quaternary of United States (11: Arizona, California, Florida collections)

• Blancan of United States (15: Arizona, California, Colorado, Kansas)

Total: 26 collections each including a single occurrence

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