Genus: Huayangosaurus DONG, TANG & ZHOU, 1982
Etymology: After a book entitled Hua Yang Guo Zhi from the Jin Dynasty (265-317 AD), when Sichuan was called Huayang.

Species: taibaii DONG, TANG & ZHOU, 1982
Etymology: Taibai after the famous poet Li Bai, who lived during the Tang Dynasty in Sichuan.

Holotype: IVPP AS V6728

Locality: Dashanpu Quarry, situated 11 km east of Zigong City, 250 km south of Chengdu, Hechuan County, Sichuan Basin, Sichuan (Szechwan) Province, China.

Horizon: Lower Shaximiao Formation.


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 and dentary, and fragmentary postcranial skeleton, including 3 cervical vertebrae, 3 dorsal vertebrae, fragmentary sacrum, several caudal vertebrae, 2 metatarsals, several phalanges, several dermal plates one spine, and four scutes.
Note: Paleopathology, 3 or 4 caudak vertebrae form a small lub-like mass pathology.