Calippus regulus Johnston 1937 (horse)

Mammalia - Perissodactyla - Equidae

Alternative combination: Calippus (Calippus) regulus

Synonym: Calippus anatinus Quinn 1955

Full reference: C. S. Johnston. 1937. Description of a New Horse, Calippus regulus from the Clarendon Beds of Donley County, Texas. American Midland Naturalist 18(5):905-907

Belongs to Calippus according to S. R. May 2019

See also Forsten 1975, Hulbert 1988, Johnston 1937, MacFadden 1998, Quinn 1955 and Stirton 1940

Sister taxa: none

Type specimens:

  • Calippus regulus: West Texas State College Museum 878, a maxilla (right upper molar-premolar series (P2-M3) of an adult individual, l still in place in the maxillary). Its type locality is Grant Lease, which is in a Miocene terrestrial horizon in Texas.
  • Calippus anatinus: BEG 30896-173, a skull. Its type locality is Buckner Ranch Site 1, which is in a Clarendonian terrestrial horizon in the Goliad Formation of Texas.

Ecology: ground dwelling grazer


• Miocene of United States (27: Colorado, Kansas, Nebraska, Oklahoma, Texas, Virginia collections)

Total: 27 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.

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