Arctotherium

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Arctotherium
Fossil range: Late Pliocene–Pleistocene
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Superfamily: Arctoidea
Family: Ursidae
Subfamily: Tremarctinae
Tribe: Tremarctini
Genus: Arctotherium
Burmeister, 1879
Species
  • A. angustidens
  • A. bonariense
  • A. brasilense
  • A. latidens
  • A. tarijense
  • A. vetustum
  • A. wingei

Arctotherium is an extinct genus of South American short-faced bears within Ursidae of the late Pliocene through the end of the Pleistocene.[1] They were endemic to South America living from ~2.0–0.01 Ma, existing for approximately 1.99 million years. Their closest relatives were the North American short-faced bears of genus Arctodus (A. pristinus and A. simus). The closest living relative would be the spectacled bear (Tremarctos ornatus).[2]

Contents

Taxonomy

Arctotherium was named by Burmeister (1879). It was assigned to Tremarctinae by Krause et al. 2008.[2]

Morphology

References

  1. ^ Soibelzon, L. H.; Tonni, E. P.; Bond, M. (October 2005). "The fossil record of South American short-faced bears (Ursidae, Tremarctinae)". Journal of South American Earth Sciences 20 (1-2): 105–113. doi:10.1016/j.jsames.2005.07.005. 
  2. ^ a b Krause, J.; Unger, T.; Noçon, A.; Malaspinas, A.; Kolokotronis, S.; Stiller, M.; Soibelzon, L.; Spriggs, H.; Dear, P. H.; Briggs, A. W.; Bray, S. C. E.; O'Brien, S. J.; Rabeder, G.; Matheus, P.; Cooper, A.; Slatkin, M.; Pääbo, S.; Hofreiter, M. (2008-07-28). "Mitochondrial genomes reveal an explosive radiation of extinct and extant bears near the Miocene-Pliocene boundary". BMC Evolutionary Biology 8 (220). doi:10.1186/1471-2148-8-220. 

See also