Castor canadensis Kuhl, 1820. Beitr. Zool. Vergi. Anat., 1:64.

TYPE LOCALITY: Canada, Hudson Bay.

DISTRIBUTION: Brooks Range in Alaska (USA) to Labrador (Canada), Tamaulipas (Mexico), and N Florida (USA). Introduced in Europe and Asia.

STATUS: IUCN - Endangered as C. c. frondator and C. c. mexicanus.

SYNONYMS: acadicus, baileyi, belugae, caecator, carolinensis, concisor, duchesnei, frondator, idoneus, labradorensis, leucodontus, mexicanus, michiganensis, missouriensis, pallidus, phaeus, repentinus, rostralis, sagittatus, shastensis, subauratus, taylori, texensis.

COMMENTS: Lavrov and Orlov (1973) considered this species distinct from fiber. Reviewed by Jenkins and Busher (1979, Mammalian Species, 120).