†order Chaoyangornithiformes Hou 1997 (bird)
Parent taxon: Ornithurae according to X. Zhou and F. Zhang 2001
Sister taxa: Ambiortus, Apatornis, Apsaravis, Archaeovolans, Carinatae, Chaoyangia, Chaoyangiformes, Gansus, Gobipterygiformes, Guildavis, Hesperornis, Iaceornis, Jianchangornis, Liaoningornithiformes, Odontoholcae, Odontoholomorphae, Otogornis, Qinornis, Schizooura, Songlingornithidae, Yanornithiformes, Yixianornithiformes
Subtaxa: Yixianornis
Ecology: ground dwelling carnivore