Genus: Protarchaeopteryx JI & JI, 1997
Etymology:
= Incisivosaurus XU, CHENG, WANG & CHANG, 2002
Species: robusta JI & JI, 1997
Etymology:
Holotype: NGMC 2125
Locality: Sihetun, Shangyuan, Beipiao City, western Liaoing Province, northeastern China.
Horizon: Horizon 1, Lower part of the Yixian Formation (Jiulongsong Member of Chaomidianzi Formation), Jehol Group.
Biostratigraphy: Psittacosaurus Fauna, Confuciusornis Avifauna.
Age: Valanginian Stage, Upper Neocomian Subepoch, Early Early Cretaceous Epoch, Early Cretaceous.
Material: Fragmentary skull and fragmentary skeleton with feather impressions.
Note: Has furcula.