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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.
Skull of a beaver. 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.
Tierra del Fuego National Park in Argentina is especially threatened, as the beavers are destroying long-protected trees. [citation needed] The animals have spread beyond Tierra del Fuego itself into the Brunswick Peninsula of Chile, and the government fears further penetration into continental South America. [6]
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Amblyrhiza inundata from the family Heptaxodontidae was a massive animal, it weighed 50–200 kg (110–440 lb). [209] [208] The largest beaver was the giant beaver (Castoroides) of North America. It grew over 2 m in length and weighed roughly 90 to 125 kg (198 to 276 lb), also making it one of the largest rodents to ever exist.
A family of beavers has been released in the Paradise Fields wetlands area, in Ealing, west London.
The previously mentioned antarctic blue whale holds the title of the biggest animal on earth. It can weigh up to 400,000 pounds and reach a length of 98 feet. The giant’s heart is the size of a car.
Beaver damage on the north shore of Robalo Lake, Navarino Island, Chile. In the 1940s, beavers were brought to Tierra del Fuego in southern Chile and Argentina for commercial fur production and introduced near Fagnano Lake. Although the fur enterprise failed, 25 mating pairs of beavers were released into the wild.