Castor californicus

Castor californicus; Temporal range: late Miocene to early Pleistocene
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Rodentia
Family:	Castoridae
Genus:	Castor
Species:	†C. californicus
Binomial name
	†Castor californicus; Kellogg, 1911
	Sites of C. californicus finds
Synonyms
	†Castor accessor Hay, 1927

Castor californicus is an extinct species of beaver that lived in western North America from the end of the Miocene to the early Pleistocene.^[2] Castor californicus was first discovered in Kettleman Hills in California, United States. The species was similar to but larger than the extant North American beaver, C. canadensis.^[4]

Unlike other members of the Castor genus, the Castor californicus has a total of three enamel folds, the folds of the internal enamel epithelium.^[5]

^ Kellogg, Louise (1911). "A Fossil Beaver from the Kettleman Hills, California". Bulletin of the Department of Geology. 6 (17). University of California Publications: 401–402.
^ ^a ^b "The Paleobiology Database - Castor californicus". Retrieved 2007-09-30.
^ Hay, Oliver P. (1927). The Pleistocene of the Western Region of North America and its Vertebrated Animals. Carnegie Institution of Washington. Publication ;no. 322B. Carnegie Institution of Washington. pp. 266–267.
^ Kurtén, B. & E. Anderson (1980). Pleistocene Mammals of North America. New York: Columbia University Press. pp. 236–237. ISBN 0-231-03733-3.
^ "A fossil beaver from the Kettleman Hills, California, by Louise Kellogg | The Online Books Page". onlinebooks.library.upenn.edu. Retrieved 2023-10-24.

[1] Kellogg, Louise (1911). "A Fossil Beaver from the Kettleman Hills, California". Bulletin of the Department of Geology. 6 (17). University of California Publications: 401–402.

[PbDb-2] "The Paleobiology Database - Castor californicus". Retrieved 2007-09-30.

[3] Hay, Oliver P. (1927). The Pleistocene of the Western Region of North America and its Vertebrated Animals. Carnegie Institution of Washington. Publication ;no. 322B. Carnegie Institution of Washington. pp. 266–267.

[K&A-4] Kurtén, B. & E. Anderson (1980). Pleistocene Mammals of North America. New York: Columbia University Press. pp. 236–237. ISBN 0-231-03733-3.

[:0-5] "A fossil beaver from the Kettleman Hills, California, by Louise Kellogg | The Online Books Page". onlinebooks.library.upenn.edu. Retrieved 2023-10-24.

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