Classification of Deméré 1994

Or. Carnivora Bowdich 1821 [carnivoran]
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Infraor. Pinnipedia Illiger 1811 [pinniped]
Fm. Odobaenidae Allen 1880 [walrus]
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G. †Imagotaria Mitchell 1968
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†Imagotaria downsi Mitchell 1968
G. †Neotherium Kellogg 1931
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†Neotherium mirum Kellogg 1931
Fm. Pinnipedia Illiger 1811 [pinniped]
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Fm. Odobenidae Allen 1880 [walrus]
Subfm. †Dusignathinae Mitchell 1968
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G. †Dusignathus Kellogg 1927
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G. †Gomphotaria Barnes and Raschke 1991
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†Gomphotaria pugnax Barnes and Raschke 1991
G. †Pontolis True 1905
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†Pontolis magnus True 1907
Subfm. Odobeninae Allen 1880
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G. †Aivukus Repenning and Tedford 1977
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†Aivukus cedrosensis Repenning and Tedford 1977
Tr. Odobenini Allen 1880
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G. †Alachtherium Du Bus 1867
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†Alachtherium cretsii Du Bus 1867
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Invalid names: Odobenus antverpiensis Rutten 1907 [synonym]
G. Odobenus Brisson 1762 [walrus]
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†Odobenus huxleyi Lankester 1865
†Odobenus koninckii Van Beneden 1871
†Odobenus mandanoensis Tomida 1989
Odobenus rosmarus Linnaeus 1758 [walrus]
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Invalid names: Odobenus virginianus De Kay 1842 [synonym], Trichechus virginianus Dekay 1842 [synonym]
Invalid names: Trichechodon Lankester 1865 [synonym]
G. †Pliopedia Kellogg 1921
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†Pliopedia pacifica Kellogg 1921
G. †Prorosmarus Berry and Gregory 1906
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†Prorosmarus alleni Berry and Gregory 1906
G. †Valenictus Mitchell 1961
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†Valenictus imperialensis Mitchell 1961