Genus: Callobatrachus WANG & GAO, 1999
Etymology: Greek, kallos, “delicate” and Greek, batrachnus, “frog”: Delicate frog.

Species: sanyanensis WANG & GAO, 1999
Etymology: Sanyan, Chinese Pinyin, Anciant place name for Liaoning , Northeastern China.

Holotype: IVPP V11525

Locality: Sihetun, Shanguan, Beipiao, Liaoning Province, Northeastern China.

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

Biostratigraphy: Psittacosaurus Fauna, Confuciusornis Avifauna.

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

Material: Nearly complete specimen.

Referred material:

AZUMA, 2005

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:

JZ-8: Skull and skeleton.