'(unknown)'
Early Cretaceous, 127-99 million years ago
Dinosauria, Ornithischia, Ornithopoda, Euornithopoda, Iguanadontia, Euiguanadontia, Dryomorpha, Ankylopollexia, Iguanodontoidea
You, Luo, Shubin, Witmer, Tang and Tang (2003)