Description originale
O. Lambert, P. Godefroit, and H. Li, C.-Y. Shang, Z.-M. Dong. 2001. A new species of Protoceratops (Dinosauria, Neoceratopsia) from the Late Cretaceous of Inner Mongolia (P. R. China). Bulletin de l'Institut Royal des Sciences Naturelles de Belgique, Science de la Terre 71(supplement):5-28
X. Chen, K. Tan, and L. Lu, S. Ji. 2022. Occurrence of Protoceratops hellenikorhinus (Ceratopsia: Protoceratopsidae) in Alxa region, western Inner Mongolia, China. Acta Geologica Sinica 96(11):3722-3732
DOI ↗
O. Lambert, P. Godefroit, and H. Li, C.-Y. Shang, Z.-M. Dong. 2001. A new species of Protoceratops (Dinosauria, Neoceratopsia) from the Late Cretaceous of Inner Mongolia (P. R. China). Bulletin de l'Institut Royal des Sciences Naturelles de Belgique, Science de la Terre 71(supplement):5-28