Miohippus gidleyi Osborn 1904

Mammalia - Perissodactyla - Equidae

Alternative combinations: Mesohippus gidleyi, Pediohippus gidleyi

Synonyms: Mesohippus grallipes Sinclair 1925, Mesohippus validus Osborn 1904, Miohippus validus Osborn 1904

Full reference: H. F. Osborn. 1904. New Oligocene horses. Bulletin of the American Museum of Natural History 20(13):167-179

Belongs to Miohippus according to B. J. MacFadden 1998

See also Macdonald 1951, Matthew 1909, Osborn 1904, Osborn 1918, Prothero and Shubin 1989, Schlaikjer 1935, Scott 1941, Sinclair 1925, Stirton 1940 and Stock 1933

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

Type specimens:

  • Miohippus gidleyi: AMNH 1192, a partial skeleton (partly broken skull of young individual, with complete unworn grinding teeth, cervical vertebrre associated). Its type locality is Indian Stronghold (Protoceras Channel), which is in a Whitneyan fluvial sandstone in the Brule Formation of South Dakota.
  • Mesohippus grallipes: Princeton University Geological Museum No. 10729, a skeleton (mostly complete skeleton). Its type locality is Indian Stronghold (Protoceras Channel), which is in a Whitneyan fluvial sandstone in the Brule Formation of South Dakota.
  • Miohippus validus: AMNH 680, a partial skeleton (skull and jaws and portions of limbs). Its type locality is Indian Stronghold (Protoceras Channel), which is in a Whitneyan fluvial sandstone in the Brule Formation of South Dakota.

Distribution: found only at Indian Stronghold (Protoceras Channel)

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