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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 californicum Merriam 1911 (no. 44308), Arctotherium yukonense Lambe 1911 (no. 44310), Dinarctotherium merriami Barbour 1916 (no. 45746), Tremarctotherium californicum Merriam 1911 (no. 52414), 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 californicum: UCMP 17754, a set of postcrania (elements of the foot).
  • 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: scansorial insectivore

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