DromeosauridaeAnas_platyrhynchosChauna_torquataGallus_gallusCrax_pauxiCrypturellus_undulatusLithornisIchthyornisHesperornis_regalisBaptornis_adventusPatagopteryx_deferrariisiCathayornis_yandicaConcornis_lacustrisNeuquenornis_volansGobipteryx_minutaVorona_berivotrensisApsaravis_ukhaanaYanornis_chaoyangensisYixianornis_grabauiHongshanornis_longicrestaArchaeorhychus_spathulaLiaoningornis_longidigitusConfuciusornis_sanctusSapeornis_chaoyangensisJeholornis_primaArchaeopteryx_lithographicaOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Zhou_et_Zhang_2006a