DromaeosauridaeArchaeopteryx_lithographicaJeholornisSapeornisConfuciusornis_sanctusArchaeorynchusVorona_berivotrensisPatagopteryx_deferrariisiHongshanornisApsaravis_ukhaanaIchthyornisIaceornis_marshiiAnas_platyrhynchosChauna_torquataGallus_gallusCrax_pauxiCrypturellus_undulatusLithornisHesperornis_regalisBaptornis_adventusYanornis_martiniSonglingornis_linghensisYixianornis_grabauiProtopteryxPengornisNeuquenornis_volansGobipteryx_minutaCathayornis_yandicaConcornis_lacustrisOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Zhou_etal_2008a