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The North American porcupine (Erethizon dorsatum), also known as the Canadian porcupine, is a large quill-covered rodent in the New World porcupine family. It is the second largest rodent in North America after the North American beaver ( Castor canadensis ).
Erethizon is a genus of New World porcupine and the only one of its family to be found north of southern Mexico. The North American porcupine (Erethizon dorsatum) is the only extant species, but at least 4 extinct relatives are known, the oldest dating to the Late Pliocene . [ 2 ]
Genus Erethizon. North American porcupine - E. dorsatum; Fossil genera †Branisamyopsis Candela 2003 †Cholamys Pérez et al. 2018 †Eopululo Frailey & Campbell Jr 2004 †Hypsosteiromys Patterson 1958 †Microsteiromys Walton 1990 †Neosteiromys Rovereto 1914 †Palaeosteiromys Boivin et al. 2017 †Paradoxomys Ameghino 1885 ...
A porcupine is any of 30 species of rodents belonging to the families Erethizontidae (genera: Coendou, Erethizon, and Chaetomys) or Hystricidae (genera: Atherurus, Hystrix, and Trichys). Porcupines vary in size considerably: Rothschild's porcupine of South America weighs less than a kilogram (2.2 lb); the crested porcupine found in Italy ...
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Erethizon dorsatum: Weighing approximately 15 pounds, porcupines are the largest of Alaska's rodents except for beavers. Porcupines are found everywhere in Alaska except the Alaska Peninsula and Kodiak, Nunivak, and St. Lawrence islands. In winter, porcupines primarily eat trees' inner bark; in summer, they eat trees' buds and young leaves.
Erethizon dorsatum [40] North American beaver [1] [3] [2] Castor canadensis: A single mandible and three isolated teeth. [3] †Squirrel [1] [30] †Sciurus calycinus: Two partial lower jaws. Sciurus calycinus was dubbed by Cope in 1871, [30] but has been considered a synonym of the red squirrel, flying squirrel, or gray squirrel. There has not ...
Porcupine (Erethizon dorsatum) Red fox (Vulpes vulpes) Richardson's ground squirrel or flickertail (Spermophilus richardsonii) Striped skunk (Mephitis mephitis) Thirteen-lined ground squirrel (Spermophilus tridecemlineatus) White-tailed deer (Odocoileus virginianus) Greater sage grouse