You Hailu & Dodson, Peter.szerk.: Weishampel, David B., Dodson, Peter, & Osmolska, Halszka: Basal Ceratopsia, The Dinosauria, 2nd edition, Berkeley: University of California Press, 478–493. o. (2004)
Xu Xing, Forster, Catherine A., Clark, James M. & Mo Jinyou (2006). „A basal ceratopsian with transitional features from the Late Jurassic of northwestern China”. Proceedings of the Royal Society of London: Biological Sciences273, 2135–2140. o. DOI:10.1098/rspb.2006.3566.
Lü Junchang, Kobayashi, Yoshitsugu, Lee Yuong-Nam & Ji Qiang (2007). „A new Psittacosaurus (Dinosauria: Ceratopsia) specimen from the Yixian Formation of western Liaoning, China: the first pathological psittacosaurid”. Cretaceous Research. DOI:10.1016/j.cretres.2006.08.005.
Yang Wei, Li Shuguang & Jiang Baoyu (2007). „New evidence for Cretaceous age of the feathered dinosaurs of Liaoning: zircon U-Pb SHRIMP dating of the Yixian Formation in Sihetun, northeast China”. Cretaceous Research. DOI:10.1016/j.cretres.2006.05.011.
Lingham-Soliar, T. (2008). „A unique cross section through the skin of the dinosaur Psittacosaurus from China showing a complex fibre architecture”. Proceedings of the Royal Society B: Biological Sciences275 (1636), 775–780. o. DOI:10.1098/rspb.2007.1342. PMID18182372. PMC2596897.
Zhao, Q., Barrett, P.M., Eberth, D.A. (2007). „Social behaviour and mass mortality in the basal ceratopsian dinosaur Psittacosaurus (Early Cretaceous, People's Republic of China)”. Palaeontology50 (5), 1023-1029. o. DOI:10.1111/j.1475-4983.2007.00709.x.
Alexander, R. D. (1974). „The evolution of social behaviour”. Annual Review of Ecology and Systematics5, 325–383. o. DOI:10.1146/annurev.es.05.110174.001545.
Zhao, Q. (2013). „Juvenile-only clusters and behaviour of the Early Cretaceous dinosaur Psittacosaurus”. Acta Palaeontologica Polonica. DOI:10.4202/app.2012.0128.
Hedrick, B. P.; Gao Chunling; Omar, G. I.; Zhang Fengjiao; Shen Caizhi; Dodson, P. (2014). „The osteology and taphonomy of a Psittacosaurus bonebed assemblage of the Yixian Formation (Lower Cretaceous), Liaoning, China”. Cretaceous Research51, 321–340. o. DOI:10.1016/j.cretres.2014.06.015.
Hu Yaoming, Meng Jin, Wang Yuanqing & Li Chuankui (2005). „Large Mesozoic mammals fed on dinosaurs”. Nature433, 149–152. o. DOI:10.1038/nature03102.
Lingham-Soliar, T. (2008). „A unique cross section through the skin of the dinosaur Psittacosaurus from China showing a complex fibre architecture”. Proceedings of the Royal Society B: Biological Sciences275 (1636), 775–780. o. DOI:10.1098/rspb.2007.1342. PMID18182372. PMC2596897.
ncbi.nlm.nih.gov
Lingham-Soliar, T. (2008). „A unique cross section through the skin of the dinosaur Psittacosaurus from China showing a complex fibre architecture”. Proceedings of the Royal Society B: Biological Sciences275 (1636), 775–780. o. DOI:10.1098/rspb.2007.1342. PMID18182372. PMC2596897.