Full reference: S.-Y. Yang, M.G. Lockley, R. Greben, B.R. Erickson, and S.-K. Lim. 1995. Flamingo and duck-like bird tracks from the Late Cretaceous and Early Tertiary: evidence and implications. Ichnos 4:21-34
Parent taxon: Aves according to S.-Y. Yang et al. 1995
Sister taxa: Accipitriformes, Aegotheliformes, Aletornis, Avimimiformes, Avipedidae, Callaeidae, Chaoyangornithidae, Charadriiformes, Colymbiformes, Emeidae, Eoaves, Eremopezidae, Gansuiformes, Gastornithiformes, Hwangsanipes, Ignotornidae, Jeholornithiformes, Jindongornipodidae, Koreanornipodidae, Liaoxiornithidae, Manu, Meliphagidae, Metornithes, Monarchidae, Mystiornithiformes, Neornithes, Odontornithes, Omnivoropterygiformes, Ornithothoraces, Ornithurae, Palaeoaves, Pangalliformes, Pansphenisciformes, Petroicidae, Proornis, Protoaviformes, Pygostylia, Rahona, Sapeornithiformes, Shandongornipodidae, Sphenisciformes, Stereornithes, Struthiones, Tatarornipes, Trisauropodiscidae, Tshulia, Tubinares, Turnagridae, Zhongjianornis, Zhongornis
Subtaxa: Uhangrichnus chuni
Ecology: ground dwelling carnivore