1. Balanoff AM, Rowe T (2007) Osteological description of an embryonic skeleton of the extinct elephant bird, Aepyornis (Palaeognathae: Ratitae). Soc Vert Paleontol Memoir 9, J Vert Paleontol 27(suppl. to 4):1–53
2. Bohlin B (1953) Fossil reptiles from Mongolia and Kansu. The Sino-Swedish Expedition, Publication no. 37, pp 1–105
3. Brown B, Schlaikjer EM (1940) The structure and relationships of Protoceratops. Ann NY Acad Sci 40:133–266
4. Buffetaut E, Grellet-Tinner G, Suteethorn V, Cuny G, Tong H, Košir A, Cavin L, Chitsing S, Griffiths PJ, Tabouelle J, Le Loeuff J (2005) Minute theropod eggs and embryo from the Lower Cretaceous of Thailand and the dinosaur-bird transition. Naturwissenschaften 92:477–482
5. Carpenter K, Alf K (1994) Global distribution of dinosaur eggs, nests, and babies. In: Carpenter K, Hirsch KF, Horner JR (eds) Dinosaur eggs and babies. Cambridge University Press, Cambridge, pp 15–30