Drassonax Harpagophagus Amphicynodontidae List of fossil pinnipedimorphs List of the prehistoric life of Colorado List of the Cenozoic life of Colorado Amphicticeps Kamtschatarctos Prototaria Puijila Pelagiarctos Pontophoca Monotherium Pachyphoca Phocanella Nanophoca Afrophoca Homiphoca Imagotaria Kolponomos Frisiphoca Piscophoca Monachinae Hadrokirus Desmatophoca Proneotherium Pontolis Praepusa Semantoridae Noriphoca Valenictus Platyphoca Callophoca Leptophoca Ontocetus Pinnipedimorpha Lobodontini Otarioidea Auroraphoca Gryphoca Desmatophocidae Titanotaria Thalassoleon Pliophoca Aivukus Pteronarctos Potamotherium Phocinae Pliopedia Archaeodobenus Acrophoca Nano…

odobenus Gomphotaria Neotherium Osodobenus Allodesmus Enaliarctos Odobenidae Amphicynodon List of pinnipeds