A basal ceratopsian with transitional features from the Late Jurassic of northwestern China

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	A basal ceratopsian with transitional features from the Late Jurassic of northwestern China
	Xu, Xing ; Forster, Catherine A.; Clark, James M.; Mo, Jinyou
	2006-09-07
发表期刊	PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
卷号	273 期号:1598 页码:2135-2140
文章类型	Article
摘要	Although the Ceratopsia and Pachycephalosauria, two major ornithischian groups, are united as the Marginocephalia, few synapomorphies have been identified due to their highly specialized body-plans. Several studies have linked the Heterodontosauridae with either the Ceratopsia or Marginocephalia, but evidence for these relationships is weak, leading most recent studies to consider the Heterodontosauridae as the basal member of another major ornithischian radiation, the Ornithopoda. Here, we report on a new basal ceratopsian dinosaur, Yinlong downsi gen. et. sp. nov., from the Late Jurassic upper part of the Shishugou Formation of Xinjiang, China. This new ceratopsian displays a series of features transitional between more derived ceratopsians and other ornithischians, shares numerous derived similarities with both the heterodontosaurids and pachycephalosaurians and provides strong evidence supporting a monophyletic Marginocephalia and its close relationship to the Heterodontosauridae. Character distributions along the marginocephalian lineage reveal that, compared to the bipedal Pachycephalosauria, which retained a primitive post-cranial body-plan, the dominantly quadrupedal ceratopsians lost many features and evolved their own characters early in their evolution.
关键词	Ceratopsia Marginocephalia Ornithischia Late Jurassic Shishugou Formation
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
学科领域	古爬行动物学
关键词[WOS]	EARLY EVOLUTION ; ORNITHISCHIAN DINOSAURS
收录类别	SCI
语种	英语
WOS研究方向	Life Sciences & Biomedicine - Other Topics ; Environmental Sciences & Ecology ; Evolutionary Biology
WOS类目	Biology ; Ecology ; Evolutionary Biology
WOS记录号	WOS:000240104300006
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/1938
专题	古低等脊椎动物研究室
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China 2.Amer Museum Nat Hist, New York, NY 10024 USA 3.SUNY Stony Brook, Dept Anat Sci, Stony Brook, NY 11794 USA 4.George Washington Univ, Dept Biol Sci, Washington, DC 20052 USA 5.China Univ Geosci, Fac Earth Sci, Wuhan 430074, Peoples R China 6.Nat Hist Museum Guangxi, Nanning 530012, Peoples R China
推荐引用方式 GB/T 7714	Xu, Xing,Forster, Catherine A.,Clark, James M.,et al. A basal ceratopsian with transitional features from the Late Jurassic of northwestern China[J]. PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES,2006,273(1598):2135-2140.
APA	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 B-BIOLOGICAL SCIENCES,273(1598),2135-2140.
MLA	Xu, Xing,et al."A basal ceratopsian with transitional features from the Late Jurassic of northwestern China".PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES 273.1598(2006):2135-2140.

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