Species: paradoxus WANG, 2000
Etymology:
Holotype: IVPP V 11944A, B (part and counterpart.)
Locality: Inner Mongolia (Nei Mongol), China.
Horizon: Daohugou bed, Horizon 1, Yixian Formation, Jehol Group.
Biostratigraphy: Psittacosaurus Fauna, Confuciusornis Avifauna.
Age: Valanginian Stage, Upper Neocomian Subepoch, Early Early Cretaceous Epoch, Early Cretaceous.
Referred material:
DFONG, HUANG, & WANG, 2011, 2012
IVPP V14195, V18083: Nearly complete specimens.
Note With conchostracans or insects as stomach contents.
Note: With soft tissue impressions (e.g. eyes, gills, skin, tail fins).