Eucastor

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

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

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]

E. tortus skull