Species: sanyanensis HOU, 1997
Etymology: Sanyan (three Yan kingdoms) being pinyin romanization for this region of china during the period of the Sixteen Kingdoms circa 341 AD, represented by the Former Yan, later Yan, and Northern Yan kingdoms established by the Tungusic tribes of Manchuria and eastern Mongolia.
Holotype: IVPP 10530
Locality: Boluochi, Chaoyang City, Liaoning Province, China.
Horizon: Horizon IV, Jiufotang Formation, Upper Jehol Group.
Biostratigraphy: Pistacosaurus fauna, Cathayornis-Chaoyanga Avifauna.
Age: Barremian Stage, Lower Gallic Subepoch, Lower Early Cretaceous Epoch, Early Cretaceous.
Material: Fragmentary skeleton.