Full reference: H.-L. You, Z.-X. Luo, N. H. Shubin, L. M. Witmer, Z.-L. Tang and F. Tang. 2003. The earliest-known duck-billed dinosaur from deposits of late Early Cretaceous age in northwest China and hadrosaur evolution. Cretaceous Research 24:348-355
Parent taxon: Hadrosauroidea according to A. A. Ramírez-Velasco et al. 2012
Sister taxa: Bactrosaurus, Batyrosaurus, Bolong, Cedrorestes, Claosaurus, Eolambia, Fukuisaurus, Gilmoreosaurus, Glishades, Hadrosauridae, Huehuecanauhtlus, Jeyawati, Jintasaurus, Jinzhousaurus, Levnesovia, Mantellisaurus, Nanyangosaurus, Penelopognathus, Probactrosaurus, Protohadros, Saurolophidae, Shuangmiaosaurus, Spheroolithidae, Tanius, Telmatosaurus, Tethyshadros, Xuwulong
Subtaxa: Equijubus normani
Ecology: ground dwelling herbivore