Species: beishanensis HOU & ZHANG, 1993
Etymology: In reference to the Beishan Quarry, Chaoyang County, Liaoning Province, China, where the specimen was found.

Holotype: IVPP 9934

Locality: Beishan Quarry, Chaoyang County, 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: Incomplete skeleton lacking skull and forelimbs.

Referred material:

HOU, MARTIN, ZHOU & FEDUCCIA, 1996

Number: Not given: Partial foot, and shoulder girdle including the furcula, coracoids, and sternum.

Number: Not given: Fragmentary skull and fragmentary skeleton.