Ischyromys typus Leidy 1856 (rodent)

Mammalia - Rodentia - Ischyromyidae

Synonyms: Colotaxis cristatus Cope 1873, Gymnoptychus chrysodon Cope 1873, Ischyromys chrysodon Cope 1873, Ischyromys cristatus Cope 1873, Ischyromys pliacus Troxell 1922, Ischyromys troxelli Wood 1937

Full reference: J. Leidy. 1856. Notice of remains of extinct Mammalia, discovered by Dr. F. V. Hayden in Nebraska Territory. Proceedings of the Academy of Natural Sciences of Philadelphia 8:88-90

Belongs to Ischyromys according to J. Leidy 1856

See also Cope 1873, Cope 1873, Cope 1875, Galbreath 1953, Hay 1902, Heaton 1993, Heaton 1996, Howe 1966, Korth 2014, Lambe 1908, Leidy 1857, Matthew 1903, Matthew 1910, Troxell 1921, Troxell 1922, Wood 1937 and Wood 1980

Sister taxa: Ischyromys blacki, Ischyromys douglassi, Ischyromys junctus, Ischyromys parvidens, Ischyromys typus nanus, Ischyromys veterior

Subtaxa: Ischyromys typus lloydi

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Ecology: ground dwelling herbivore


• Oligocene of United States (40: Colorado, Nebraska, North Dakota, South Dakota, Wyoming collections)

• Eocene of United States (7: Colorado, Montana, Nebraska, Wyoming)

Total: 47 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.

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