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Arctodus simus Cope 1879 (giant short-faced bear)

Osteichthyes - Carnivora - Ursidae

PaleoDB taxon number: 44277

Alternative combinations: Arctotherium simum, Tremarctotherium simum

Synonyms: Arctodus simus yukonensis Lambe 1911 (no. 161736), Arctotherium yukonense Lambe 1911 (no. 44310), Dinarctotherium merriami Barbour 1916 (no. 45746), Tremarctotherium yukonense Lambe 1911 (no. 52416)

Full reference: E. D. Cope. 1879. The cave bear of California. American Naturalist 13(12):791

Belongs to Arctodus according to R. L. Richards and W. D. Turnbull 1995

Sister taxon: Arctodus pristinus

Type specimens:

  • Arctodus simus: UCMP V-17754, a skull (skull)
  • Arctotherium yukonense: Cat. No. 7438, a skull (complete skull without lower jaw). Its type locality is Gold-run Creek Arctotherium, which is in a Pleistocene terrestrial horizon in Canada.
  • Dinarctotherium merriami:

Ecology: ground dwelling herbivore-carnivore

Average measurements (in mm): P1 10.2 x 7.3, P2 7.61 x 4.73, P3 8.92 x 5.44, P4 21.6 x 15.9, M1 25.0 x 24.0, M2 35.3 x 22.9, p1 6.90 x 6.20, p2 9.04 x 5.94, p3 6.85 x 4.55, p4 12.5 x 7.5, m1 32.5 x 17.0, m2 30.1 x 20.7, m3 21.0 x 16.0, m4 18.7 x 14.5, C1 27.9 x 17.9, c1 28.0 x 19.7