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The North American porcupine migrated from South America, where all New World porcupines or hystricomorphs evolved. Erethizon appeared in North America shortly after the two continents joined together in the later Tertiary period. Other hystricomorphs also migrated, but Erethizon was the only one to survive north of Mexico. No known fossils are ...
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 ]
They vary in size from the relatively small prehensile-tailed porcupines, which are around 30 cm (12 in) long, and weigh about 900 g (32 oz), to the much larger North American porcupine, which has a body length of 86 cm (34 in), and weighs up to 18 kg (40 lb).
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 ...
Erethizontinae is a subfamily of the New World porcupine family Erethizontidae, [1] and includes all species of the family with the exception of the bristle-spined rat, Chaetomys subspinosus, which is classified in its own subfamily, Chaetomyinae.
Erethizon; Erethizontidae; N. North American porcupine This page was last edited on 29 March 2013, at 09:57 (UTC). Text is available under the Creative Commons ...
The Baturite porcupine (Coendou baturitensis) is a nocturnal species of rodent in the family Erethizontidae that is found in Brazil. [1] The name refers to the locality of origin, a forests on a mountain range similar to the Brejos de Altitude of the Brazilian Northeast where a fauna different from that of the surrounding semiarid Caatinga can be found.
Cape porcupine: Hystrix africaeaustralis : Extant: 30 kg (66 lb) 8: Crested porcupine: Hystrix cristata : Extant: 27 kg (60 lb) 9: North American porcupine: Erethizon dorsatum: Extant: 18 kg (40 lb) 10: Indian crested porcupine: Hystrix indica: Extant: 18 kg (40 lb) 11: Coypu: Myocastor coypus: Extant: 17 kg (37 lb) 12: Patagonian mara ...