Hyracodon leidyanus Troxell 1921 (odd-toed ungulate)

Mammalia - Perissodactyla - Hyracodontidae

Synonym: Hyracodon apertus Sinclair 1922

Full reference: E. L. Troxell. 1921. New species of Hyracodon. American Journal of Science 2(7):34-40

Belongs to Hyracodon according to D. R. Prothero 1998

See also Galbreath 1953, Prothero 1996, Scott 1941, Sinclair 1922, Troxell 1921 and Wood 1926

Sister taxa: Hyracodon browni, Hyracodon major, Hyracodon medius, Hyracodon nebraskensis, Hyracodon petersoni, Hyracodon primus, Hyracodon priscidens

Type specimens:

  • Hyracodon leidyanus: YPM 11168, a partial skull (a maxillary and ramus with tooth series P1 to M2 and p2 to m1, inclusive.). Its type locality is Crow Buttes (Whitney-South Dakota), which is in a Whitneyan terrestrial horizon in South Dakota.
  • Hyracodon apertus:

Ecology: ground dwelling browser


• Oligocene of United States (7: Colorado, Nebraska, South Dakota collections)

Total: 7 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.

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