Castor Linnaeus 1758

Castor Linnaeus 1758, Syst. Nat., 10th ed., Vol. 1: 58.

Type Species: Castor fiber Linnaeus 1758

Synonyms: Fiber Dumeril 1806; Mamcastorus Herrera 1899 .

Species and subspecies: 2 species:

Species Castor canadensis Kuhl 1820

Species Castor fiber Linnaeus 1758

Discussion: The two species differ in cranial features and chromosome number (Heidecke, 1986).