Mammalia - Carnivora - Ursidae

PaleoDB taxon number: 52602

Alternative combination: Euarctos americanus

Synonyms: Euarctos vitabilis Gidley 1913 (no. 52613), Ursus altifrontalis Elliot 1903 (no. 105097), Ursus amblyceps Baird 1859 (no. 105093), Ursus amplidens Leidy 1853 (no. 52603), Ursus californiensis Miller 1900 (no. 105095), Ursus carlottae Osgood 1901 (no. 105096), Ursus floridanus Merriam 1896 (no. 105094), Ursus kermodei Hornaday 1905 (no. 105099), Ursus luteolus Griffith 1821 (no. 105092), Ursus machetes Elliot 1903 (no. 105098), Ursus optimus Schultz 1938 (no. 52610)

Belongs to Ursus according to S. Larivière 2001

Sister taxa: Ursus abstrusus, Ursus arctos, Ursus arvernensis, Ursus deningeri, Ursus dentrificius, Ursus etruscus, Ursus inopinatus, Ursus malayanus, Ursus maritimus, Ursus minimus, Ursus praemalayanus, Ursus priscus, Ursus spelaeus, Ursus thibetanus, Thalassarctos spitzbergensis, Thalassarctos eogroenlandicus, Thalassarctos labradorensis, Thalassarctos jenaensis, Euarctos optimus, Ursus (Euarctos) vitabilis

Ecology: scansorial herbivore-carnivore

Average measurements (in mm): P4 12.7 x 9.5, M1 18.4 x 13.8, M2 27.5 x 15.8, p4 10.3 x 5.8, m1 19.6 x 9.4, m2 20.1 x 12.5, m3 15.5 x 11.7, femur length 312.6, humerus length 269.7, radius length 222.1, scapula 172.2 x 155.5, skull 255.6 x 146.8, tibia length 228.2

Estimated body mass: 65.7 kg based on femur length, humerus length, and tibia length