Species: chuannanensis HE & CAI, 1984
Etymology:

Holotype: ZDM 8601 (provincial excavation team no. GCC T 8601)

Locality: Dashanpu (Dashnapu Dinosaur Quarry), lat. 29°5’N, long. 104°50’E, situated 11 km east of Zigong City, 250 km south of Chengdu, Hechuan County, Sichuan Basin, Sichuan (Szechwan) Province, China.

Horizon: Xaishaximiao (Shaximiao) Formation.

Biostratigraphy:

Age: Bathonian-Callovian Stage (DONG & TANG, 1984), Middle-Upper Dogger Epoch, Middle Jurassic.

Note: Bajocian (CHEN et al. 1982), Lower Middle Dogger Epoch, Middle Jurassic.

Material: A complete skull with lower jaws.

Referred material:

Vertebrae, humerus and femur probably belonging to the same individual.