Anchitheriomys
Encyclopedia
Anchitheriomys is an extinct member of the beaver
Beaver
The beaver is a primarily nocturnal, large, semi-aquatic rodent. Castor includes two extant species, North American Beaver and Eurasian Beaver . Beavers are known for building dams, canals, and lodges . They are the second-largest rodent in the world...
family, Castoridae
Castoridae
The family Castoridae contains the two living species of beaver and their fossil relatives. This was once a highly diverse group of rodents, but is now restricted to a single genus, Castor.- Characteristics :...
. Until recently, it was placed in a closely related family of rodent
Rodent
Rodentia is an order of mammals also known as rodents, characterised by two continuously growing incisors in the upper and lower jaws which must be kept short by gnawing....
s, Eutypomyidae
Eutypomyidae
Eutypomyidae is a family of extinct rodents from North America and Eurasia thought to be related to modern beavers....
(e.g.), but have since described a partial skull that shows similarities to another early beaver, Agnotocastor
Agnotocastor
Agnotocastor is an extinct member of the mammalian family Castoridae. Unlike its modern relative, this species took the place of muskrats in the rivers of North America during the Oligocene epoch....
.