Mesohippus westoni Cope 1889 (anchitheriine horse)

Mammalia - Perissodactyla - Equidae

Alternative combinations: Anchitherium westoni, Anchitherium westonii, Miohippus westoni, Miohippus westonii

Synonyms: Mesohippus montanensis Osborn 1904, Mesohippus praecocidens Lambe 1905

Full reference: E. D. Cope. 1889. The Vertebrata of the Swift Current River, II. The American Naturalist 23(267):151-155

Belongs to Mesohippus according to B. J. MacFadden 1998

See also Clark and Beerbower 1967, Cope 1889, Cope 1891, Hay 1902, Lambe 1905, Lambe 1908, Macdonald 1992, Osborn 1904, Osborn 1918, Prothero and Shubin 1989, Russell 1975, Scott 1941, Stirton 1940, Storer and Bryant 1993 and Tabrum et al. 2001

Sister taxa: Mesohippus bairdi, Mesohippus barbouri, Mesohippus celer, Mesohippus cuneatus, Mesohippus exoletus, Mesohippus latidens, Mesohippus propinquus, Mesohippus texanus

Type specimens:

  • Mesohippus westoni: Ottawa Mus6289, a set of teeth (a single superior molar, and two inferior molars, the latter in place in a part of the mandible.).
  • Mesohippus montanensis: AMNH 9662, a set of teeth (dP2-4, M1). Its type locality is Pipestone Springs, which is in a Chadronian terrestrial claystone in the Renova Formation of Montana.
  • Mesohippus praecocidens: Ottawa Mus. 6297, a tooth (an imperfect left upper molar).

Ecology: ground dwelling browser


• Eocene of Canada (4: Saskatchewan collections), United States (2: North Dakota, Wyoming)

Total: 6 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.

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