Miohippus annectens Marsh 1874 (anchitheriine horse)

Mammalia - Perissodactyla - Equidae

Alternative combination: Mesohippus annectens

Synonym: Miohippus crassicuspis Osborn 1904

Full reference: O. C. Marsh. 1874. Notice of new equine mammals from the Tertiary formation. American Journal of Science 7(39):247-258

Belongs to Miohippus according to B. J. MacFadden 1998

See also Hay 1902, Macdonald 1992, Marsh 1874, Osborn 1904, Osborn 1918, Prothero and Shubin 1989 and Stirton 1940

Sister taxa: Miohippus anceps, Miohippus assiniboiensis, Miohippus condoni, Miohippus equiceps, Miohippus equinanus, Miohippus gemmarosae, Miohippus gidleyi, Miohippus grandis, Miohippus intermedius, Miohippus longicristis, Miohippus obliquidens, Miohippus primus, Miohippus quartus, Miohippus taxus

Type specimens:

  • Miohippus annectens: YPM 11275, a set of teeth (eleven upper molar and premolar teeth)
  • Miohippus crassicuspis: AMNH 683, a set of teeth (Second and third right upper premolars). Its type locality is Indian Stronghold (Protoceras Channel), which is in a Whitneyan fluvial sandstone in the Brule Formation of South Dakota.

Ecology: ground dwelling browser


• Arikareean of United States (2: California, Montana collections)

Total: 2 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.

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