Biology:Chaoyangsauridae
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Short description: Family of ceratopsian dinosaurs
| Chaoyangsauridae | |
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| Compared close-up of the four so far known chaoyangsaurid genera, with pink representing known parts of skulls | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Clade: | †Ornithischia |
| Suborder: | †Ceratopsia |
| Family: | †Chaoyangsauridae Zhao, Cheng, & Xu, 1999 |
| Type species | |
| †Chaoyangsaurus youngi Zhao, Cheng, & Xu, 1999
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| Genera | |
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.
Four dinosaur genera, Chaoyangsaurus, Xuanhuaceratops, Yinlong and Hualianceratops, are usually considered to belong to the Chaoyangsauridae.[1][2][3] In 2020, Yu et al. classified Stenopelix as a chaoyangsaurid.[4] All five animals are more primitive (or basal) than both Psittacosaurus and neoceratopsians.
See also
References
- ↑ Zhao, X.; Cheng, Z.; Xu; Makovicky, P. J. (2006). "A new ceratopsian from the Upper Jurassic Houcheng Formation of Hebei, China". Acta Geologica Sinica 80 (4): 467–473.
- ↑ Han, Fenglu; Forster, Catherine A.; Clark, James M.; Xu, Xing (2015). "A New Taxon of Basal Ceratopsian from China and the Early Evolution of Ceratopsia". PLOS ONE 10 (12): e0143369. doi:10.1371/journal.pone.0143369. PMID 26649770.
- ↑ Han, Feng-Lu; Forster, Catherine A.; Clark, James M.; Xu, Xing (2016). "Cranial anatomy of Yinlong downsi(Ornithischia: Ceratopsia) from the Upper Jurassic Shishugou Formation of Xinjiang, China". Journal of Vertebrate Paleontology 36: e1029579. doi:10.1080/02724634.2015.1029579.
- ↑ Yu, Congyu; Prieto-Marquez, Albert; Chinzorig, Tsogtbaatar; Badamkhatan, Zorigt; Norell, Mark (2020-09-10). "A neoceratopsian dinosaur from the early Cretaceous of Mongolia and the early evolution of ceratopsia". Communications Biology 3 (1). doi:10.1038/s42003-020-01222-7. ISSN 2399-3642. http://dx.doi.org/10.1038/s42003-020-01222-7.
Wikidata ☰ Q2740816 entry
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