Helohyus plicodon Marsh 1872 (even-toed ungulate)

Mammalia - Ungulata

Synonyms: Helohyus validus Marsh 1872, Thinotherium validum Marsh 1872

Full reference: O. C. Marsh. 1872. Preliminary description of new Tertiary mammals. Part II. American Journal of Science 4(21):202-224

Belongs to Helohyus according to O. C. Marsh 1894

See also Gazin 1976, Hay 1902, Marsh 1872, Stucky 1998 and West 1984

Sister taxa: Helohyus lentus, Helohyus milleri, Thinotherium annulatum

Type specimens:

  • Helohyus plicodon: Its type locality is Grizzly Buttes, which is in a Bridgerian terrestrial horizon in the Bridger Formation of Wyoming
  • Thinotherium validum:

Ecology: amphibious herbivore-omnivore


• Eocene of United States (23: Wyoming collections)

Total: 23 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.

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