(Protocetus_atavus,(Georgiacetus_vogtlensis,Dorudon_atrox,(Zygorhiza_kochii,(Mammalodon_colliveri,(Aetiocetus_weltoni,((Eomysticetus_whitmorei,Micromysticetus_rothauseni),(Parietobalaena_palmeri,Parietobalaena_campiniana,Aglaocetus_moreni,Titanocetus_sammarinensis,Cophocetus_oregonensis,Diorocetus_hiatus,Joumocetus_shimizui,Cetotherium_rathkii,Piscobalaena_nana,Mixocetus_elysius,Metopocetus_durinasus,USNM_187416,Eschrichtius_robustus,Eschrichtioides_gastaldii,Archaeschrichtius_ruggieroi,(Caperea_marginata,(Balaena_mysticetus,Balaenella_brachyrhynus,(Balaenula_astensis,Eubalaena_glacialis))),(Uranocetus_gramensis,(Isanacetus_laticephalus,(Pelocetus_calvertensis,Aglaocetus_patulus))),(Archaebalaenoptera_castriarquati,Parabalaenoptera_baulinensis,Megaptera_novaeangliae,Plesiobalaenoptera_quarantellii,Megaptera_hubachi,(Balaenoptera_physalus,Balaenoptera_musculus,(Balaenoptera_acutorostrata,Balaenoptera_edeni,Balaenoptera_borealis)),(Balaenoptera_siberi,Diunatans_luctoretemergo),(Plesiocetus_cortesii_var_portisi,Protororqualus_cuvieri)))))))));