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GENUS Ursus

Author:Linnaeus, 1758.
Citation:Syst. Nat., 10th ed., 1: 47.
Type Species:Ursus arctos Linnaeus, 1758, by tautonymy (Melville and Smith, 1987).
Comments:The close relationship of the four species included herein has been generally recognized by morphological and molecular studies (Goldman et al., 1989; Hendey, 1980a; Kurtén and Anderson, 1980; Shields and Kocher, 1991). Allen (1938) proposed a close relationship between thibetanus and americanus. Thenius (1953), Goldman et al. (1989), and Shields and Kocher (1991) gave support to the monophyly of arctos with maritimus. Synonyms allocated according to McKenna and Bell (1997).
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Offspring:

SPECIES americanus

SUBSPECIES americanus

SUBSPECIES altifrontalis

SUBSPECIES amblyceps

SUBSPECIES californiensis

SUBSPECIES carlottae

SUBSPECIES cinnamomum

SUBSPECIES emmonsii

SUBSPECIES eremicus

SUBSPECIES floridanus

SUBSPECIES hamiltoni

SUBSPECIES kermodei

SUBSPECIES luteolus

SUBSPECIES machetes

SUBSPECIES perniger

SUBSPECIES pugnax

SUBSPECIES vancouveri

SPECIES arctos

SUBSPECIES arctos

SUBSPECIES alascensis

SUBSPECIES beringianus

SUBSPECIES californicus

SUBSPECIES collaris

SUBSPECIES crowtheri

SUBSPECIES dalli

SUBSPECIES gyas

SUBSPECIES horribilis

SUBSPECIES isabellinus

SUBSPECIES lasiotus

SUBSPECIES middendorffi

SUBSPECIES pruinosus

SUBSPECIES sitkensis

SUBSPECIES stikeenensis

SUBSPECIES syriacus

SPECIES maritimus

SPECIES thibetanus

SUBSPECIES thibetanus

SUBSPECIES formosanus

SUBSPECIES gedrosianus

SUBSPECIES japonicus

SUBSPECIES laniger

SUBSPECIES mupinensis

SUBSPECIES ussuricus

Synonyms:

    Arcticonus Pocock, 1917
    Danis J. E. Gray, 1825
    Euarctos Gray, 1864
    Mamursus Herrera, 1899
    Melanarctos Heude, 1898
    Mylarctos Lönnberg, 1923
    Myrmarctos J. E. Gray, 1864
    Selenarctos Heude, 1901
    Thalassarctos J. E. Gray, 1825
    Thalassarctus Gloger, 1841
    Thalassiarchus Kobelt, 1896
    Ursarctos Heude, 1898
    Ursulus Kretzoi, 1954
    Vetularctos Merriam, 1918

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