Species: sanyanensis WANG & GAO, 1999
Etymology: Sanyan, Chinese Pinyin, Anciant place name for Liaoning , Northeastern China.
Holotype: IVPP V11525
Locality: Sihetun, Shanguan, Beipiao, Liaoning Province, Northeastern 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: Nearly complete specimen.
Referred material:
AZUMA, 2005
Locality: Western Liaoning Province, China.
Horizon: Yixian Formation, Jehol Group.
Biostratigraphy: Psittacosaurus Fauna, Confuciusornis Avifauna.
Age: Valanginian Stage, Upper Neocomian Subepoch, Early Early Cretaceous Epoch, Early Cretaceous.
Material:
JZ-8: Skull and skeleton.