BEHRENDT, 2006

Locality: Western Liaoning Province, China.

Horizon: Yixian Formation, Jehol Group.

Biostratigraphy: Psittacosaurus Fauna, Confuciusornis Avifauna.

Age: Valanginian Stage, Upper Neocomian Subepoch, Early Early Cretaceous Epoch, Early Cretaceous.

Material:

Number: Not given: Skull and skeleton.

Note: Gastroliths.

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WANG, LI, WEN, CHEN & REISZ, 2025

Locality: Lujiatun Village, Biepiao, Liaoning Province, China.

Horizon: Horizon 1, Lower part of the Yixian Formation, Jehol Group.

Biostratigraphy: Psittacosaurus Fauna, Confuciusornis Avifauna.

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

Material:

JLU DERC-Z0007: Cluster of 13 jueniles.

Note: Nearly all of them have gastroliths.