Zygorhiza_kochiiPhyseter_macrocephalusTasmacetus_shepherdiMegaptera_novaeangliaeBalaenoptera_physalusBalaenoptera_musculusBalaenoptera_borealisBalaenoptera_edeni_brydeiBalaenoptera_bonaerensisBalaenoptera_acutorostrataEschrichtius_robustusCaperea_marginataBalaena_mysticetusEubalaenaMammalodon_colliveriAetiocetus_weltoniAetiocetus_cotylalveusAetiocetus_polydentatusChonecetus_goedertorumEomysticetus_whitmoreiAglaocetus_patulusCetotherium_rathkiiCophocetus_oregonensisDiorocetus_hiatusIsanacetus_laticephalusMixocetus_elysiusParietobalaena_palmeriPelocetus_calvertensisBalaenoptera_gastaldiiSDSNH_90517Megaptera_miocaenaMegaptera_hubachiParabalaenoptera_baulinensisAgorophiusSqualodon_calvertensisJanjucetus_hunderiOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Demere_etal_2008a