PaleoDB taxon number: 53286
Full reference: C. A. Walker. 1981. New subclass of birds from the Cretaceous of South America. Nature 292:51-53
Parent taxon: Ornithothoraces according to X. Wang et al. 2014
Sister taxa: Euornithes, Ornithuromorpha, Xinghaiornis
Subtaxa: Aberratiodontuidae, Alexornithiformes, Avisauridae, Bohaiornithidae, Boluochiformes, Cathayornis, Cathayornis aberransis, Cathayornis chabuensis, Cathayornithiformes, Concornis, Cruralispennia, Dunhuangia, Elektorornis, Elsornis, Enantiornithiformes, Eoalulavis, Eocathayornis, Eoenantiornis, Eoenantiornithiformes, Euenantiornithes, Euornithiformes, Evgenavis, Feitianius, Flexomornis, Fortunguavis, Gobipipus, Gobipteryx, Gretcheniao, Holbotia, Houornis, Huoshanornis, Iberomesornis, Junornis, Lectavis, Linyiornis, Longipterygidae, Longipterygiformes, Longirostravisiformes, Microenantiornis, Monoenantiornis, Noguerornis, Orienantius, Otogornis, Paraprotopteryx, Parvavis, Pengornithidae, Piscivorenantiornis, Protopterygiformes, Protopteryx, Pterygornis, Qiliania, Shangyang, Sinornis, Vescornis, Xiangornis, Yuanjiawaornis, Yungavolucris
Ecology: ground dwelling carnivore