Boreosomus_piveteauiBirgeria_groelandicaChondrosteus_acipenseroidesPeipiaosteus_paniPolyodon_spathulaProtopsephurus_liuiPriscosturion_longipinnisHuso_husoScaphirhynchus_platorynchusPseudoscaphirhynchus_kauffmaniPseudoscaphirhynchus_hermannniAcipenser_brevirostrumAcipenser_stellatusAcipenser_ruthenusAcipenser_fulvescensAcipenser_oxyrinchusAcipenser_transmontanusAcipenser_baeriiOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Hilton_etal_2011a