Ursinae is a subfamily of Ursidae (bears) named by Swainson (1835). It was assigned to Ursidae by Bjork (1970), Hunt (1998), and Jin et al. (2007).
Classification
The genera
Melursus and
Helarctos are sometimes also included in
Ursus. The Asiatic black bear and the polar bear used to be placed in their own genera,
Selenarctos and
Thalarctos; these are now placed at
subgenus rank.
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Subfamily Ursinae Fischer de Waldheim, 1817
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† Aurorarctos Jiangzuo & Flynn, 2020
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† Aurorarctos tirawa Jiangzuo & Flynn, 2020
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Helarctos Thomas Horsfield, 1825
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Melursus Bernhard Meyer, 1793
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† Protarctos Kretzoi, 1945
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† Protarctos abstrusus (Bjork, 1970)
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† Protarctos boeckhi (Schlosser, 1899)
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† Protarctos ruscinensis (Depéret, 1890)
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† Protarctos yinanensis (Li, 1993)
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Ursus Carl Linnaeus, 1758
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Ursus americanus (Pallas, 1780) – American black bear
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Ursus arctos Carl Linnaeus, 1758 – brown bear
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† Ursus deningeri Richenau, 1904
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† Ursus dolinensis (Garcia & Arsuaga, 2001)
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† Ursus etruscus Georges Cuvier, 1823
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† Ursus ingressus Rabeder, Hofreiter, Nagel & Withalm 2004
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† Ursus kudarensis Baryshnikov, 1985
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Ursus maritimus Phipps, 1774 – polar bear
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† Ursus minimus (Devèze & Bouillet, 1827)
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† Ursus pyrenaicus (Depéret, 1892)
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† Ursus rossicus Borissiak, 1930
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† Ursus sackdillingensis Heller, 1955
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† Ursus savini (Andrews, 1922)
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† Ursus spelaeus Rosenmüller, 1794 – cave bear
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Ursus thibetanus (Georges Cuvier, 1823) – Asiatic black bear
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† Ursus vitabilis? Gidley, 1913
A number of hybrids have been bred between American black, brown, and polar bears (see ).
