Species: asuwaensis SHIKAMA, 1969
Etymology:

Holotype: Private collection of Kitagawa, plastic models at the Geological Institute, Yokohama National University and National Science Museum, Tokyo.

Locality: A roadside cliff, 300 m east of Kamishinbashi bridge on the Asuwa River, between Kowashimizu and Shinagase, Asuwa-gun, Miyama Town, Fukui Prefecture, Kuzuryu, Honshu Island, Japan.

Horizon: Kuzuryn Subgroup, Tetori Group.

Biostratigraphy:

Age: Callovanian? Upper Dogger Epoch, Middle Jurassic.

Material: Skull and fragmentary skeleton.