TyrannosauridaeDromaeosauridaeAchillesaurus_manazzoneiAlvarezsaurus_calvoiPatagonykus_puertaiAlbertonykus_borealisYPM_1049Xixianykus_zhangiMononykus_olecranusShuvuuia_desertiParvicursor_remotusUCMP_154584Tugriken_Shireh_alvarezsaurOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Xu_etal_2010a