PaleoDB taxon number: 64526
Full reference: J. J. Head. 1998. A new species of basal hadrosaurid (Dinosauria, Ornithischia) from the Cenomanian of Texas. Journal of Vertebrate Paleontology 18(4):718-738
Parent taxon: Hadrosauroidea according to P. Cruzado-Caballero and J. E. Powell 2017
Sister taxa: Arstanosaurus akkurganensis, Bactrosaurus, Batyrosaurus, Cedrorestes, Claosaurus, Datonglong, Eolambia, Equijubus, Fukuisaurus, Gilmoreosaurus, Gobihadros, Gongpoquansaurus, Hadrosauridae, Huehuecanauhtlus, Iguanodon hillii, Jeyawati, Jintasaurus, Koshisaurus, Levnesovia, Nanningosaurus, Nanyangosaurus, Penelopognathus, Plesiohadros, Probactrosaurus, Saurolophidae, Shuangmiaosaurus, Sirindhorna, Spheroolithidae, Tanius, Telmatosaurus, Tethyshadros, Trachodon cantabrigiensis, Xuwulong, Yunganglong, Zhanghenglong, Zuoyunlong
Subtaxa: Protohadros byrdi
Type: Protohadros byrdi
Ecology: ground dwelling herbivore