Subhyracodon mitis Cope 1875

Mammalia - Perissodactyla - Rhinocerotidae

Alternative combinations: Aceratherium mite, Caenopus mitis

Synonyms: Aceratherium copei Osborn 1898, Aceratherium pumilum Cope 1885, Caenopus copei Osborn 1898, Caenopus pumilus Cope 1886, Subhyracodon copei Osborn 1898

Full reference: E. D. Cope. 1875. Report on the vertebrate paleontology of Colorado. Annual Report of the United States Geological and Geographical Survey of the Territories 1873:427-533

Belongs to Subhyracodon according to D. R. Prothero 2005

See also Cope 1875, Cope 1885, Cope 1891, Cope and Matthew 1915, Hay 1902, Lambe 1908, Peterson 1920, Prothero and Manning 1987, Scott 1941, Sinclair 1924, Stock 1933, Troxell 1921, Wood 1927 and Wood 1929

Sister taxa: Subhyracodon kewi, Subhyracodon occidentalis, Subhyracodon planiceps, Subhyracodon woodi, Caenopus yoderensis, Caenopus (Leptaceratherium), Caenopus simplicidens

Type specimens:

  • Subhyracodon mitis: Its type locality is Horsetail Creek, which is in a Chadronian terrestrial horizon in the White River Formation of Colorado
  • Aceratherium copei:
  • Aceratherium pumilum:
  • Caenopus pumilus:


• Oligocene of United States (2: South Dakota collections)

• Eocene of United States (10: Colorado, Montana, Nebraska, South Dakota, Wyoming)

Total: 12 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.

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