(Enaliarctos_emlongi,(Pteronarctos_goedertae,((Callorhinus_ursinus,((Desmatophoca_oregonensis,Allodesmus_gracilis),(Erignathus_barbatus,Monachus_monachus))),(Prototaria_primigenia,(Proneotherium_repenningi,(Neotherium_mirum,Kamtschatarctos_sinelnikovae,(Pseudotaria_muramotoi,((Imagotaria_downsi,Pelagiarctos_sp),(Pontolis_magnus,(Gomphotaria_pugnax,((Dusignathus_santacruzensis,Dusignathus_seftoni),(Aivukus_cedrosensis,(Protodobenus_japonicus,(Ontocetus_emmonsi,(Valenictus_chulavistensis,Odobenus_rosmarus)))))))))))))));