Species: imperfecta YOUNG, 1951 (nomen dubium)
Etymology:

Holotype: IVPP V V40

Locality: Huangchiatein, Lufeng, Yunnan Province, China.

Horizon: Dark Red Beds, Lower Lufeng Formation.

Biostratigraphy:

Age: Sinemurian-Pliensbachian Stage, Middle Lias Epoch, Early Jurassic.

Material: Middle section of skull.

Referred material:

Number: Not given: Basiociptial and teeth.