K. Chiba, M. J. Ryan, and M. Saneyoshi, S. Konishi, Y. Yamamoto, D. C. Evans, T. Chinzorig, P. Khatanbaatar, Z. Badamkhatan, B. Mainbayar, K. Tsogtbaatar. 2023. New insights on the frill ornamentations of protoceratopsids. Windows into Sauropsid and Synapsid Evolution: Essays in Honor of Louis L. Jacobs
Ł. Czepiński. 2020. New protoceratopsid specimens improve the age correlation of the Upper Cretaceous Gobi Desert strata. Acta Palaeontologica Polonica 65(3):481-497
DOI ↗
N. Handa, M. Watabe, and K. Tsogtbaatar. 2012. New specimens of Protoceratops (Dinosauria: Neoceratopsia) from the Upper Cretaceous in Udyn Sayr, southern Gobi area, Mongolia. Paleontological Research 16(3):179-198
DOI ↗
D. E. Fastovsky, D. B. Weishampel, and M. Watabe, R. Barsbold, K. Tsogtbaatar, P. Narmandakh. 2011. A nest of Protoceratops andrewsi (Dinosauria, Ornithischia). Journal of Paleontology 85(6):1035-1041
DOI ↗
V. S. Tereshchenko and V. R. Alifanov. 2003. Bainoceratops efremovi, a new protoceratopid dinosaur (Protoceratopidae, Neoceratopsia) from the Bain-Dzak locality (south Mongolia). Paleontological Journal 37(3):293-302
Y. Matsumoto, R. Hashimoto, and T. Sonoda. 2000. Report of preparation works for Mongolian specimens in HMNS from March 1994 to December 1998. Hayashibara Museum of Natural Sciences Research Bulletin 1:113-127
V. S. Tereshchenko. 1996. A reconstruction of the locomotion of Protoceratops. Paleontological Journal 30(2):232-245
R. Gradzinski, Z. Kielan-Jaworowska, and T. Maryanska. 1977. Upper Cretaceous Djadokhta, Barun Goyot and Nemegt formations of Mongolia, including remarks on previous subdivisions. Acta Geologica Polonica 27(3):281-318
R. Barsbold. 1974. Poyedinok dinozavrov [Dueling dinosaurs]. Prioda 1974(2):81-83
S. M. Kurzanov. 1972. Sexual dimorphism in protoceratopsians. Paleontological Journal 1972(1):91-97
Z. Kielan-Jaworowska. 1966. Third (1965) Polish-Mongolian Palaeontological Expedition to the Gobi Desert and western Mongolia. Bulletin de l'Académie Polonaise des Sciences, Cl. II 14(4):249-252
Z. Kielan-Jaworowska and K. Kowalski. 1965. Polish-Mongolian Palaeontological Expeditions to the Gobi Desert in 1963 and 1964. Bulletin de l'Académie Polonaise des Sciences, Cl. II 13(3):175-179
W. Granger and W. K. Gregory. 1923. Protoceratops andrewsi, a pre-ceratopsian dinosaur from Mongolia, with an appendix on the structural relationships of the Protoceratops beds. American Museum Novitates 72:1-9