A New Taxon of Basal Ceratopsian from China and the Early Evolution of Ceratopsia

IVPP-IR > 中科院古脊椎所（2000年以后）

	A New Taxon of Basal Ceratopsian from China and the Early Evolution of Ceratopsia
	Han, Fenglu 1,2; Forster, Catherine A.3; Clark, James M.3; Xu, Xing 2
	2015-12-09
发表期刊	PLOS ONE
卷号	10 期号:12
文章类型	Article
摘要	Ceratopsia is one of the best studied herbivorous ornithischian clades, but the early evolution of Ceratopsia, including the placement of Psittacosaurus, is still controversial and unclear. Here, we report a second basal ceratopsian, Hualianceratops wucaiwanensis gen. et sp. nov., from the Upper Jurassic (Oxfordian) Shishugou Formation of the Junggar Basin, northwestern China. This new taxon is characterized by a prominent caudodorsal process on the subtemporal ramus of the jugal, a robust quadrate with an expansive quadratojugal facet, a prominent notch near the ventral region of the quadrate, a deep and short dentary, and strongly rugose texturing on the lateral surface of the dentary. Hualianceratops shares several derived characters with both Psittacosaurus and the basal ceratopsians Yinlong, Chaoyangsaurus, and Xuanhuaceratops. A new comprehensive phylogeny of ceratopsians weakly supports both Yinlong and Hualianceratops as chaoyangsaurids (along with Chaoyangsaurus and Xuanhuaceratops), as well as the monophyly of Chaoyangosauridae + Psittacosaurus. This analysis also weakly supports the novel hypothesis that Chaoyangsauridae + Psittacosaurus is the sister group to the rest of Neoceratopsia, suggesting a basal split between these clades before the Late Jurassic. This phylogeny and the earliest Late Jurassic age of Yinlong and Hualianceratops imply that at least five ceratopsian lineages (Yinlong, Hualianceratops, Chaoyangsaurus + Xuanhuaceratops, Psittacosaurus, Neoceratopsia) were present at the beginning of the Late Jurassic.
WOS标题词	Science & Technology
关键词[WOS]	DINOSAUR CHANGCHUNSAURUS-PARVUS ; NEOCERATOPSIAN DINOSAUR ; TUCHENGZI FORMATION ; JILIN PROVINCE
收录类别	SCI
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000366903300016
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/7159
专题	中科院古脊椎所（2000年以后）
作者单位	1.China Univ Geosci, Sch Earth Sci, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Evolutionary Systemat Vertebrates, Beijing, Peoples R China 3.George Washington Univ, Dept Biol Sci, Washington, DC 20052 USA
推荐引用方式 GB/T 7714	Han, Fenglu,Forster, Catherine A.,Clark, James M.,et al. A New Taxon of Basal Ceratopsian from China and the Early Evolution of Ceratopsia[J]. PLOS ONE,2015,10(12).
APA	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).
MLA	Han, Fenglu,et al."A New Taxon of Basal Ceratopsian from China and the Early Evolution of Ceratopsia".PLOS ONE 10.12(2015).

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