Family
Valid Extinct

Chaoyangsauridae

(Zhao 1983)

Chaoyangsauridae is a family of ceratopsian dinosaurs. They are among the earliest known marginocephalian dinosaurs, with remains dating to about 160 million years ago, during the Late Jurassic period. Members of this group had sharp beaks for snipping off leaves to eat, and a very small frill.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
5
Group
Dinosaures
Herbivore Ground dwelling Terrestrial
Chaoyangsauridae
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Wikimedia
PBDB ↗ Wikipedia ↗
Classification
Dinosauria Unranked clade
›
Ornithischia Unranked clade
›
Neornithischia Unranked clade
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Pyrodontia Unranked clade
›
Cerapoda Unranked clade
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Marginocephalia Unranked clade
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Ceratopsia Suborder
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Chaoyangsauridae Family
Fossil sites 5 geolocated sites
Distribution
Top countries
🇨🇳 China
4
🇩🇪 Germany
1
Geological formations
Shishugou
2
Tuchengzi
2
Bückeberg
1
Temporal distribution
Berriasian (143.1–137.05 Ma)
3
Oxfordian (161.5–154.8 Ma)
2
Synonyms (1)
Xuanhuasaurus niei nomen dubium, species not entered Chaoyangsauridae
Images 2
Bibliography
Original description
X. Zhao. 1983. Phylogeny and evolutionary stages of Dinosauria. Acta Palaeontologica Polonica 28(1-2):295-306
Bibliography (5)
F. Han, C. A. Forster, and J. M. Clark, X. Xu. 2015. A new taxon of basal ceratopsian from China and the early evolution of Ceratopsia. PLoS ONE 10(12):e0143369:1-23 DOI ↗
X. Xu, C. A. Forster, and J. M. Clark, J. Mo. 2006. A basal ceratopsian with transitional features from the Late Jurassic of northwestern China. Proceedings of the Royal Society of London B 273:2135-2140 DOI ↗
X. Zhao, Z. Cheng, and X. Xu, P. J. Makovicky. 2006. A new ceratopsian from the Upper Jurassic Houcheng Formation of Hebei, China. Acta Geologica Sinica 80(4):467-473
Z. Dong. 1992. Dinosaurian Faunas of China. China Ocean Press, Beijing
H. v. Meyer. 1857. Beiträge zur näheren Kenntniss fossiler Reptilien [Contributions to the detailed knowledge of fossil reptiles]. Neues Jahrbuch für Mineralogie, Geognosie, Geologie und Petrefakten-Kunde 1857:532-543