(Dorudon_atrox,((Physeter_macrocephalus,Ziphius_cavirostris),(Aetiocetus,(Eomysticetus_whitmorei,(Diorocetus_hiatus,(Pelocetus_calvertensis,((Eschrichtius_robustus,(Megaptera_novaeangliae,Balaenoptera_acutorostrata)),(Caperea_marginata,(Morenocetus_parvus,((Japanese_balaenula_sp,(Balaenula_astensis,Balaenula_balaenopsis)),((Eubalaena_belgica,Eubalaena_glacialis,(Eubalaena_australis,Eubalaena_japonica)),(Balaenella_brachyrhynchus,(Balaena_montalionis,(SDSNH_43880,(Balaena_ricei,Balaena_mysticetus)))))))))))))));