An Archaeopteryx-like theropod from China and the origin of Avialae

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	An Archaeopteryx-like theropod from China and the origin of Avialae
	Xu, Xing(徐星); You, Hailu(尤海鲁); Du, Kai; Han, Fenglu(韩风禄); [email protected]
	2011
发表期刊	NATURE
ISSN	0028-0836
卷号	475 期号:7357 页码:465—470
摘要	Archaeopteryx is widely accepted as being the most basal bird, and accordingly it is regarded as central to understanding avialan origins; however, recent discoveries of derived maniraptorans have weakened the avialan status of Archaeopteryx. Here we report a new Archaeopteryx-like theropod from China. This find further demonstrates that many features formerly regarded as being diagnostic of Avialae, including long and robust forelimbs, actually characterize the more inclusive group Paraves (composed of the avialans and the deinonychosaurs). Notably, adding the new taxon into a comprehensive phylogenetic analysis shifts Archaeopteryx to the Deinonychosauria. Despite only tentative statistical support, this result challenges the centrality of Archaeopteryx in the transition to birds. If this new phylogenetic hypothesis can be confirmed by further investigation, current assumptions regarding the avialan ancestral condition will need to be re-evaluated.
关键词	Dinosaur Evolution Birds Specimen Feathers
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文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/4403
专题	中科院古脊椎所（2000年以后）
通讯作者	[email protected]
推荐引用方式 GB/T 7714	Xu, Xing,You, Hailu,Du, Kai,et al. An Archaeopteryx-like theropod from China and the origin of Avialae[J]. NATURE,2011,475(7357):465—470.
APA	Xu, Xing,You, Hailu,Du, Kai,Han, Fenglu,[email protected].(2011).An Archaeopteryx-like theropod from China and the origin of Avialae.NATURE,475(7357),465—470.
MLA	Xu, Xing,et al."An Archaeopteryx-like theropod from China and the origin of Avialae".NATURE 475.7357(2011):465—470.

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