Mammalia - Rodentia - Castoridae

Alternative combination: Nannasfiber osmagnus

Full reference: X. Xu. 1996. Castoridae. The Terrestrial Eocene-Oligocene Transition in North America 412-432

Belongs to Pseudopalaeocastor according to W. W. Korth 2002

See also Xu 1996

Sister taxon: Pseudopalaeocastor barbouri

Ecology: amphibious browser

Distribution: found only at Raw Hide Buttes (Lower Harrison) ( of Wyoming)

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Specimen images are retrieved through the ePANDDA API.