Species: orientalis JI, NORELL, MAKOVICKY, GAO, JI, & YUAN, 2003
Etymology: orientalis refers to the east.
Holotype: NGMC 97-4-002
Locality: Sihetun, Shangyuan, near Beipiao City, Liaoning Province, China.
Horizon: Horizon 1, Lower part of the Yixian Formation, Jehol Group.
Biostratigraphy: Psittacosaurus Fauna, Confuciusornis Avifauna.
Age: Valanginian Stage, Upper Neocomian Subepoch, Early Early Cretaceous Epoch, Early Cretaceous.
Material: Fragmentary skull and fragmentary skeleton lacking cervicals, first
dorsals, most of the pectral girdle, lower legs and distal caudals.
Note: Has gastroliths.