(Zygorhiza_kochii,((Patriocetus_ehrlichii,Physeter_catodon),(((Chonecetus_goedertorum,(Aetiocetus_cotylalveus,Aetiocetus_polydentatus,Aetiocetus_weltoni)),(Janjucetus_hunderi,Mammalodon_colliveri)),(((Diorocetus_hiatus,(Diorocetus_chichibuensis,Parietobalaena_palmeri,Parietobalaena_yamaokai,(Aglaocetus_patulus,(Aglaocetus_moreni,(Uranocetus_gramensis,(Cophocetus_oregonensis,(Pelocetus_calvertensis,(Isanacetus_laticephalus,(Titanocetus_sammarinensis,((Caperea_marginata,(((Parabalaenoptera_baulinensis,(Archaebalaenoptera_castriarquati,Protororqualus_cuvierii,(Megaptera_hubachi,(Megaptera_miocaena,Megaptera_novaeangliae)))),(Balaenoptera_edeni,((Balaenoptera_physalus,(Balaenoptera_borealis,(Balaenoptera_acutorostrata,Balaenoptera_bonaerensis))),(Balaenoptera_siberi,(Balaenoptera_musculus,Balaenoptera_omurai))))),(Eschrichtioides_gastaldii,Eschrichtius_robustus))),(Mixocetus_elysius,(Joumocetus_shimizui,(Aulocetus_latus,Cetotherium_megalophysum,Herpetocetus_transatlanticus,Metopocetus_durinasus,Metopocetus_vandelli,Nannocetus_eremus,Piscobalaena_nana,(Cetotherium_riabinini,Cetotherium_rathkii)))),(Cephalotropis_nectus,Pinocetus_polonicus))))))))))),((Balaena_ricei,Balaena_mysticetus),(Balaenella_brachyrhynus,(Balaenula_astensis,Eubalaena_glacialis,Eubalaena_shinshuensis)))),(Eomysticetus_whitmorei,Mauicetus_lophocephalus)))));