List of fossil pinnipedimorphs Semantoridae Kamtschatarctos Prototaria Pelagiarctos Puijila Pontophoca Amphicynodontidae Pachyphoca Phocanella Homiphoca Nanophoca Monotherium Kolponomos Imagotaria Afrophoca Frisiphoca Piscophoca Monachinae Desmatophoca Hadrokirus Noriphoca Pontolis Drassonax Proneotherium Valenictus Platyphoca Callophoca Pinnipedimorpha Titanotaria Lobodontini Praepusa Otarioidea Auroraphoca Leptophoca Ontocetus Pliophoca Aivukus Thalassoleon Desmatophocidae Gryphoca Pteronarctos Potamotherium Pliopedia Archaeodobenus Acrophoca Nanodobenus Gomphotaria Neotherium Phocinae Osodobenus Allodesmus Odobenidae Enaliarctos Amphicticeps Amphicynodon List of pinnipeds