Holotype:

Locality: Liaoning Province, China.

Horizon: Horizon IV, Jiufotang Formation, Upper Jehol Group.

Biostratigraphy: Pistacosaurus fauna, Cathayornis-Chaoyanga Avifauna.

Age: Barremian Stage, Lower Gallic Subepoch, Lower Early Cretaceous Epoch, Early Cretaceous.

Material:

Private Collection: Nearly complete skull and skeleton, lacking tail from mid section, and mani.

Private Collection: Nearly complete skeleton, lying on it’s back.

Private Collection: Nearly complete skeleton, lying on it’s back., skull very fragmentary.

SECHER, 1997

Nearly complete specimen, to be sold at auction.