Classification of Kohno 2006
Cl. Mammalia Linnaeus 1758 [mammal]
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Fm. Odobaenidae Allen 1880 [walrus]
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Subfm. †Dusignathinae Mitchell 1968
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G. †Dusignathus Kellogg 1927
G. †Gomphotaria Barnes and Raschke 1991
G. †Imagotaria Mitchell 1968
G. †Neotherium Kellogg 1931
Subfm. Odobeninae Allen 1880
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G. †Aivukus Repenning and Tedford 1977
G. Odobenus Brisson 1762 [walrus]
G. †Ontocetus Leidy 1859
G. †Protodobenus Horikawa 1995
G. †Valenictus Mitchell 1961
G. †Pontolis True 1905
G. †Proneotherium Kohno et al. 1995
G. †Prototaria Takeyama and Ozawa 1984