Odobenidae

Odobenidae is a family of pinnipeds, of which the only extant species is the walrus (Odobenus rosmarus). In the past, however, the group was much more diverse, and includes more than a dozen fossil genera.

Odobenidae Temporal range: Middle Miocene to present
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Carnivora
Parvorder:	Pinnipedia
Superfamily:	Otarioidea
Family:	Odobenidae Allen, 1880
Genera
Odobenus (walrus) (see text for extinct genera)

Taxonomy

All genera, except Odobenus, are extinct.^[1]

• †Archaeodobenus
• †Prototaria
• †Proneotherium
• †Nanodobenus
• †Neotherium
• †Imagotaria
• †Kamtschatarctos
• †Pelagiarctos
• †Pontolis
• †Pseudotaria
• †Titanotaria
• Clade Neodobenia^[2]
  • †Gomphotaria
  • Subfamily Dusignathinae
    • †Dusignathus
  • Subfamily Odobeninae
    • †Aivukus
    • †Ontocetus
    • †Pliopedia
    • †Protodobenus
    • †Valenictus
    • Odobenus

In re-analyzing Pelagiarctos, Boessenecker et al. (2013) proposed the phylogenetic relationships of Odobenidae as follows (this analysis excluded Archaeodobenus, Titanotaria, Nanodobenus, and Pliopedia; and included Enaliarctos, Pteronarctos, Allodesmus, Desmatophoca, Callorhinus, Monachus, and Erignathus):^[3]

Enaliarctos emlongi † Pteronarctos goedertae † Desmatophocidae Allodesmus gracilis † Desmatophoca oregonensis † Otariidae Callorhinus ursinus Phocidae Monachus monachus Erignathus barbatus Imagotariinae Prototaria primigenia † Proneotherium regenningi † Neotherium mirum † Kamtschatarctos sinelnikovae † Pseudotaria muramotoi † Pelagiarctos sp. † Imagotaria downsi † Pontolis magnus † Dusignathinae Dusignathus santacruzensis † Gomphotaria pugnax † Dusignathus seftoni † Odobeninae Aivukus cedrosensis † Protodobenus japonicus † Ontocetus † Valenictus chulavistensis † Odobenus rosmarus