Mammalia - Perissodactyla - Equidae
Alternative combinations: Anchitherium equiceps, Mesohippus equiceps
Synonyms: Anchitherium brachylophum Cope 1878, Mesohippus acutidens Sinclair 1905, Mesohippus brachylophus Cope 1878, Miohippus acutidens Sinclair 1905, Miohippus brachylophus Cope 1878
Full reference: E. D. Cope. 1878. On some of the characters of the Miocene fauna of Oregon. Proceedings of the American Philosophical Society 18(102):63-78
Belongs to Miohippus according to Hay 1930
See also Cope 1878, Cope 1894, Fremd 1994, Hay 1902, Macdonald 1963, Macdonald 1970, Matthew 1909, Merriam and Sinclair 1907, Osborn 1904, Osborn 1918, Sinclair 1905 and Strganac 2011
Sister taxa: Anchitherium longicristis, Miohippus anceps, Miohippus annectens, Miohippus assiniboiensis, Miohippus condoni, Miohippus equinanus, Miohippus gemmarosae, Miohippus gidleyi, Miohippus grandis, Miohippus intermedius, Miohippus obliquidens, Miohippus primus, Miohippus quartus, Miohippus taxus
Type specimens:
- Miohippus equiceps: AMNH 7261, a partial skeleton (a portion of the skeleton including a com- plete cranium of one individual )
- Anchitherium brachylophum: AMNH 7260, a partial skull (A fragment of the upper jaw with M1-2). Its type locality is John Day Units G, H, I, and J, which is in a Geringian terrestrial horizon in the John Day Formation of Oregon.
- Mesohippus acutidens: UCMP 376, a partial skeleton (l'auium, portion of the left fore limb, and a few vertebral fragments).
Ecology: ground dwelling browser
Distribution:
• Arikareean of United States (1: Montana collection)
• Oligocene of Canada (1: Saskatchewan), United States (10: Oregon, South Dakota, Washington)
Total: 12 collections including 13 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.