DromeosauridaeArchaeopteryx_lithographicaJeholornis_primaSapeornis_chaoyangensisLiaoningornis_longidigitusArchaeorhychus_spathulaYanornis_chaoyangensisYixianornis_grabauiGansusIchthyornisApsaravis_ukhaanaAnas_platyrhynchosChauna_torquataGallus_gallusCrax_pauxiCrypturellus_undulatusLithornisHesperornis_regalisBaptornis_adventusPatagopteryx_deferrariisiAmbiortusHongshanornis_longicrestaConfuciusornis_sanctusCathayornis_yandicaConcornis_lacustrisNeuquenornis_volansGobipteryx_minutaVorona_berivotrensisOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.You_etal_2006b