Species: placenticephalus DONG, 1985
Etymology:

Holotype: ZDM 2001

Locality: Dashanpu (Dashnapu Dinosaur Quarry), Zigong City, lat. 29°5’N, long. 104°50’E, 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: Skull, mandible and fragmentary skeleton.