(Dromaeosauridae,(Archaeopteryx_lithographica,(Jeholornis,(Sapeornis,(Confuciusornis_sanctus,((Patagopteryx_deferrariisi,Vorona_berivotrensis,Archaeorynchus,Jianchang_ornis,(Hongshanornis,(Apsaravis_ukhaana,((Ichthyornis,(Iaceornis_marshii,(((Anas_platyrhynchos,Chauna_torquata),(Gallus_gallus,Crax_pauxi)),(Crypturellus_undulatus,Lithornis)))),(Hesperornis_regalis,Baptornis_adventus))),(Yanornis_martini,(Songlingornis_linghensis,Yixianornis_grabaui)))),(Protopteryx,(Pengornis,(Neuquenornis_volans,Gobipteryx_minuta,(Cathayornis_yandica,Concornis_lacustris))))))))));