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The first fossil records of beaver are 10 to 12 million years old in Germany, and they are thought to have migrated to North America across the Bering Strait. The oldest fossil record of beavers in North America are of two beaver teeth near Dayville, Oregon, and are 7 million years old. [30]
Beaver pelts caused or contributed to the Beaver Wars, King William's War, and the French and Indian War; the trade made John Jacob Astor and the owners of the North West Company very wealthy. For Europeans in North America, the fur trade was a driver of the exploration and westward exploration on the continent and contact with native peoples ...
Castoroides (Latin: "beaver" (castor), "like" (oides) [2]), or the giant beaver, is an extinct genus of enormous, bear-sized beavers that lived in North America during the Pleistocene. Two species are currently recognized, C. dilophidus in the Southeastern United States and C. ohioensis in most of North America.
The earliest castorids belong to the genus Agnotocastor, known from the late Eocene and Oligocene of North America and Asia. [2] Other early castorids included genera such as Steneofiber , from the Oligocene and Miocene of Europe, the earliest member of the subfamily Castorinae, which contains castorids closely related to living beavers. [ 3 ]
North American beaver on the bank of the Lower Kern River. California Golden beaver taken from Snelling, California (elevation 256 ft or 78 m and Waterford, California (elevation 51 ft or 16 m) were stocked in 1940 at Mather Station (elevation 4,522 ft or 1,378 m) west of Yosemite National Park and in 1944 at Fish Camp (elevation 5,062 ft or 1,543 m) by the California Department of Fish and ...
Unlike many trees in North America, trees in South America often do not regenerate when coppiced, destroying the forest. [9] As well as felling trees, the animals create dams that drown trees and other vegetation while creating freshwater ponds and lakes. [10] Flooding from beaver dams also damages roads and cattle pastures. [6]
Located on the Quebec side of the Ottawa River, the park is home to one of North America's densest populations of beavers, with more than 1,100 beavers in 272 beaver colonies according to a 2011 aerial inventory of the park. [85]
Beaver, Castor californicus. 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 ...