Eucastor

Eucastor
E. tortus, collected from Cherry County, Nebraska. At the AMNH.
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Rodentia
Family:	Castoridae
Tribe:	†Nothodipoidini
Genus:	†Eucastor Leidy, 1858

Eucastor is an extinct genus of beaver-grouped rodents.^[1][2]

Based on the available evidence of the foramina, Eucastor most likely is closely related to Castor, but not in its direct lineage.^[3]

It has two species, the type Eucastor (formerly Castor) tortus, and E. malheurensis^[4]

1. ^ William Henry Flower; Richard Lydekker (1891). An Introduction to the Study of Mammals Living and Extinct. A. and C. Black. p. 458. Eucastor extinct.
2. ^ T. S. Palmer (1904). "Index Generum Mammalium". North American Fauna (23). Fish and Wildlife Service: 272. doi:10.3996/nafa.23.0001.
3. ^ Olson, Everett Claire (1940). "Cranial Foramina of North American Beavers". Journal of Paleontology. 14 (5): 495–501. ISSN 0022-3360. JSTOR 1298553.
4. ^ "Fossilworks: Eucastor". Paleobiology Database. Retrieved 2024-01-21.

• McKenna, Malcolm C., and Bell, Susan K. 1997. Classification of Mammals Above the Species Level. Columbia University Press, New York, 631 pp. ISBN 0-231-11013-8

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