Ursus (genus)

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Temporal range: Pliocene - Holocene, 5.333–0 Ma
TE-Collage Ursus.png
From top to bottom: brown bear, American black bear, polar bear, Asian black bear.
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Family: Ursidae
Genus: Ursus[1][2]
Linnaeus, 1758
Ursus arctos
Ursus americanus
Ursus maritimus
Ursus thibetanus
Ursus spelaeus (extinct)

Ursus is a genus in the family Ursidae (bears) that includes the widely distributed brown bears,[3] the polar bear,[4] and black bears. The name is derived from the Latin ursus, meaning bear.[5][6]

Species and subspecies of Ursus[edit]

  • American black bear, Ursus americanus
    • U. a. altifrontalis - Olympic black bear
    • U. a. amblyceps - New Mexico black bear
    • U. a. americanus eastern black bear
    • U. a. californiensis - California black bear
    • U. a. carlottae - Haida Gwaii black bear or Queen Charlotte black bear
    • U. a. cinnamomum - cinnamon bear
    • U. a. emmonsii - glacier bear
    • U. a. eremicus - Mexican black bear
    • U. a. floridanus - Florida black bear
    • U. a. hamiltoni - Newfoundland black bear
    • U. a. kermodei - Kermode bear or spirit bear
    • U. a. luteolus - Louisiana black bear
    • U. a. machetes - West Mexico black bear
    • U. a. perniger - Kenai black bear
    • U. a. pugnax - Dall black bear
    • U. a. vancouveri - Vancouver Island black bear
  • MacFarlane's bear, Ursus inopinatus (cryptid; if an authentic species, extinct)
  • Polar bear, Ursus maritimus (earlier Thalarctos maritimus)
    • U. m. maritimus - (no common name, classification contested)
    • U. m. marinus - Siberian polar bear (classification contested)
    • U. m. tyrannus Pleistocene polar bear

A hybrid between grizzly bears and polar bears has also been recorded. Known commonly as a pizzly, prizzly, or grolar bear, the official name is simply "grizzly–polar bear hybrid".