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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.
The beaver is the largest rodent in North America and competes with its Eurasian counterpart, the European beaver, for being the third-largest in the world, both following the South American capybara and lesser capybara. The European species is slightly larger on average but the American has a larger known maximum size.
C. ohioensis skull cast (right), compared to a North American beaver skull (left). The former is a cast of a specimen from Shelby County, Iowa. At the AMNH. Castoroides species were much larger than modern beavers. Their average length was approximately 1.9 m (6.2 ft), and they could grow as large as 2.2 m (7.2 ft).
The North American beavers arrived to Wonders of Wildlife in December. They were relocated to the aquarium from a facility in Minnesota. Wonders of Wildlife seeks community feedback on naming two ...
There are two extant species: the North American beaver (Castor canadensis) and the Eurasian beaver (C. fiber). The Eurasian beaver is slightly longer and has a more lengthened skull, triangular nasal cavities (as opposed to the square ones of the North American species), a lighter fur color, and a narrower tail. [11]
The parachuting beavers have become an Idaho icon, and the project represents a pivotal shift in how the animals were managed, experts said. It’s been 75 years since Idaho parachuted beavers ...
The North American beaver is the state mammal of New York. ... They have a characteristic skull shape and dentition. Coyote. Family Canidae (canids) Genus: Canis.
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 ...