Mammalia - Perissodactyla - Rhinocerotidae
Alternative combinations: Aceratherium occidentale, Caenopus occidentalis, Rhinoceros occidentalis, Subhyracodon occidentale
Synonyms: Aceratherium exiguum Lambe 1908, Aceratherium hesperium Leidy 1865, Aceratherium quadriplicatum Cope 1873, Aceratherium trigonodum Osborn and Wortman 1894, Anchisodon quadriplicatus Cope 1873, Caenopus trigonodus Osborn and Wortman 1894, Diceratherium hesperium Leidy 1865, Hyracodon quadriplicatus Cope 1873, Leptaceratherium trigonodon Osborn and Wortman 1894, Leptaceratherium trigonodum Osborn and Wortman 1894, Rhinoceros hesperius Leidy 1865, Subhyracodon gidleyi Wood 1927, Subhyracodon hesperius Leidy 1865, Subhyracodon metalophum Wood 1927, Subhyracodon trigonodus Osborn and Wortman 1894
Full reference: J. Leidy. 1850. [Abstract of remarks made before a meeting of the Academy of Natural Sciences of Philadelphia, December 10th, 1850]. Proceedings of the Academy of Natural Sciences of Philadelphia 5:119-121
Belongs to Subhyracodon according to P.-O. Antoine et al. 2010
See also Cope 1873, Cope 1873, Cope 1891, Cope and Matthew 1915, Emry 1987, Fremd 1994, Galbreath 1953, Hay 1902, Lambe 1908, Leidy 1853, Leidy 1857, Leidy 1865, Leidy 1873, Loomis 1908, Lu 2013, Manning 1997, Osborn 1923, Osborn and Wortman 1894, Peterson 1920, Prothero 1996, Prothero 1998, Prothero 2005, Scott 1941, Sinclair 1924, Stock 1932, Stock 1933, Troxell 1921, Troxell 1921, Wood 1927, Wood 1929, Wood 1960 and Wood 1961
Sister taxa: Hyracodon planiceps, Subhyracodon kewi, Subhyracodon mitis, Subhyracodon woodi, Caenopus simplicidens, Caenopus yoderensis, Caenopus (Leptaceratherium)
Subtaxa: Caenopus trigonodus allus
Ecology: ground dwelling browser
Distribution:
• Oligocene of United States (14: Colorado, Mississippi, Montana, North Dakota, South Dakota, Wyoming collections)
• Eocene to Oligocene of United States (1: Wyoming)
• Eocene of Canada (2: Saskatchewan), United States (2: South Dakota, Wyoming)
Total: 19 collections including 20 occurrences
Specimen images are retrieved through the ePANDDA API.
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