Cranioceras unicornis Matthew 1918 (ruminant)

Mammalia - Artiodactyla - Palaeomerycidae

Synonyms: Cranioceras granti Frick 1937, Cranioceras mefferdi Frick 1937

Full reference: W. D. Matthew. 1918. Contributions to the Snake Creek Fauna with notes upon the Pleistocene of western Nebraska, American Museum Expedition of 1916. Bulletin of the American Museum of Natural History 38(7):183-229

Belongs to Cranioceras according to D. R. Prothero and M. R. Liter 2008

See also Frick 1937, Janis and Manning 1998, Matthew 1918, Prothero and Liter 2007, Voorhies 1990 and Webb 1969

Sister taxa: Cranioceras pawniensis, Cranioceras teres

Type specimens:

  • Cranioceras unicornis: Its type locality is Snake Creek Fauna, which is in a Barstovian/Clarendonian channel sandstone in Nebraska
  • Cranioceras granti: Its type locality is Leptarctus Quarry, which is in a Clarendonian terrestrial horizon in the Ash Hollow Formation of Nebraska.
  • Cranioceras mefferdi: Its type locality is Spring Canyon (Burge), which is in a Clarendonian terrestrial horizon in the Valentine Formation of Nebraska.

Ecology: ground dwelling browser

Distribution:

• Hemphillian of United States (1: Nebraska collection)

• Miocene of United States (34: California, Nebraska, South Dakota, Washington)

Total: 35 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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