(Potamotherium_valletoni,(Enaliarctos_emlongi,(Pteronarctos_goedertae,(((Pithanotaria_starri,(Callorhinus_ursinus,LACM_135920)),((Desmatophoca_oregonensis,Allodesmus_kernensis),(Erignathus_barbatus,(Monachus_monachus,Mirounga_angustirostris)))),((Prototaria_primigena,Prototaria_planicephala),(Proneotherium_repenningi,(Neotherium_mirum,(Kamtschatarctos_sinelnikovae,((Pseudotaria_muramotoi,Pelagiarctos_spp),(Archaeodobenus_akamatsui,(Imagotaria_downsi,(UABCFCM0072,(Pontolis_magnus,((Dusignathus_santacruzensis,(Dusignathus_seftoni,Gomphotaria_pugnax)),(Aivukus_cedrosensis,(Protodobenus_japonicus,(Ontocetus_emmonsi,(Valenictus_chulavistensis,Odobenus_rosmarus))))))))))))))))));