^Dechow, Paul C.; Wang, Qian. Evolution of the Jugal/Zygomatic Bones. The Anatomical Record. 2017, 300 (1): 12–15. ISSN 1932-8494. PMID 28000397. doi:10.1002/ar.23519(英语).
^Romer, Alfred Sherwood, 1894-1973. The vertebrate body : shorter version. Parsons, Thomas S. (Thomas Sturges), 1930- 5th. Philadelphia: Saunders. 1978. ISBN 0-7216-7682-0. OCLC 3345587.
^Homberger, Dominique G. Vertebrate dissection. Walker, Warren F. (Warren Franklin), Walker, Warren F. (Warren Franklin). 9th. Belmont, CA: Thomson Brooks/Cole. 2004. ISBN 0-03-022522-1. OCLC 53074665.
^Martin, A.J. (2006). Introduction to the Study of Dinosaurs. Second Edition. Oxford, Blackwell Publishing. pg. 299-300. ISBN1-4051-3413-5.
^Dodson, P. (1996). The Horned Dinosaurs. A Natural History. 346 pp. Princeton: Princeton University Press. ISBN0 691 02882 6.