Castoridae

Castoridae Temporal range: Late Eocene–Recent PreꞒ Ꞓ O S D C P T J K Pg N
North American beaver, Castor canadensis
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Rodentia
Superfamily:	Castoroidea
Family:	Castoridae Hemprich, 1820
Type genus
Castor Linnaeus, 1758
Genera
See text

Castoridae is a family of rodents that contains the two living species of beavers and their fossil relatives. A formerly diverse group, only a single genus is extant today, Castor. Two other genera of "giant beavers", Castoroides and Trogontherium, became extinct in the Late Pleistocene.