Species: ultimus ISHING, 1987 (nomen dubium)
Etymology:

Holotype: IVPP V8073 a-d

Locality: Jianshan Gorge, Kelamalii area, Northeastern Junggar Basin, Xinjiang Uygur Zizhiqu (Sinkang) Province, China.

Horizon: Wucaiwan Formation.

Biostratigraphy:

Age: Middle Jurassic.

Material: Vetebral centra and skull fragments.

Referred material:

ISHING, 1987/SCHOCH & MILNER, 2000

Locality: Jianshan Gorge, Kelameili, Xinjiang Province, China.

Horizon: Shishugao Formation.

Biostratigraphy:

Age: Late Jurassic.

Material:

IVPP V8073 b20: A single intercentrum.