Classification of the genus Ursus

G. Ursus Linnaeus 1758
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Ursus americanus Pallas 1780 [black bear]
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Invalid names: Euarctos vitabilis Gidley 1913 [synonym], Ursus altifrontalis Elliot 1903 [synonym], Ursus amblyceps Baird 1859 [synonym], Ursus amplidens Leidy 1853 [synonym], Ursus californiensis Miller 1900 [synonym], Ursus carlottae Osgood 1901 [synonym], Ursus floridanus Merriam 1896 [synonym], Ursus kermodei Hornaday 1905 [synonym], Ursus luteolus Griffith 1821 [synonym], Ursus machetes Elliot 1903 [synonym], Ursus optimus Schultz 1938 [synonym]
Ursus arctos Linnaeus 1758 [brown bear]
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Invalid names: Danis ferox Desmarest 1817 [synonym], Melanarctos cavifrons Heude 1898 [synonym], Myrmarctos eversmanni Gray 1864 [synonym], Ursus horribilis Ord 1815 [synonym], Ursus procerus Miller, Jr. 1899 [synonym], Ursus pruinosus Blyth 1854 [synonym]
†Ursus arvernensis Croizet and Jobert 1828
†Ursus boeckhi Schlosser 1899
†Ursus deningeri Reichenau 1904
†Ursus dentrificius Meyer 1839
†Ursus etruscus Cuvier 1823
†Ursus inopinatus Merriam 1918
†Ursus japonicus Koken 1885
†Ursus kokeni Matthew and Granger 1923
Ursus malayanus Raffles 1821 [sun bear]
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Invalid names: Helarctos euryspilus Horsfield 1826 [synonym]
Ursus maritimus Phipps 1774 [polar bear]
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†Ursus maritimus tyrannus Kurten 1964
Invalid names: Thalarctos polaris Gray 1825 [synonym], Ursus marinus Pallas 1776 [synonym], Ursus polaris Shaw 1792 [synonym]
†Ursus praemalayanus von Koenigswald 1935
†Ursus priscus Goldfuss 1818
†Ursus spelaeus Rosenmüller 1794 [cave bear]
†Ursus spelaeus spelaeus Rossenbüller 1794
Ursus thibetanus Cuvier 1823 [Asian black bear]
Invalid names: Arceus Goldfuss 1809 [synonym], Arcticonus Pocock 1917 [synonym], Chondrorhynchus Fisher 1814 [synonym], Danis Gray 1825 [synonym], Euarctos Gray 1864 [synonym], Helarctos Horsfield 1826 [synonym], Melanarctos Heude 1898 [synonym], Mylarctos Lönnberg 1923 [synonym], Myrmarctos Gray 1864 [synonym], Prochilus Illiger 1811 [synonym], Selenarctos Heude 1901 [synonym], Thalarctos Gray 1825 [synonym], Thalassarctos Gray 1825 [synonym], Thalassiarchus Kobelt 1896 [synonym], Ursarctos Heude 1898 [synonym], Vetularctos Merriam 1918 [synonym]