ammonites
banner
Gateway to the Paleobiology Database
Sigmodon minor Gidley 1922 (cotton rat)

Osteichthyes - Rodentia - Cricetidae

PaleoDB taxon number: 51554

Synonyms: Sigmodon hilli Hibbard 1941 (no. 51547), Sigmodon intermedius Hibbard 1937 (no. 51550), Sigmodon medius Gidley 1922 (no. 51553)

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

Sister taxa: 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: scansorial insectivore

Average measurements (in mm): M1 2.04 x 1.59, M2 1.47 x 1.57, M3 1.45 x 1.39, m1 2.01 x 1.38, m2 1.55 x 1.56, m3 1.80 x 1.49

Estimated body mass: 41.1 g based on m1 length