A new feathered maniraptoran dinosaur fossil that fills a morphological gap in avian origin

IVPP-IR > 中科院古脊椎所（2000年以后）

	A new feathered maniraptoran dinosaur fossil that fills a morphological gap in avian origin
	XU Xing1 ; ZHAO Qi 1; NORELL Mark 2; SULLIVAN Corwin 1; HONE David 1; ERICKSON Gregory 2; WANG XiaoLin1 ; HAN FengLu1 ; GUO Yu 1
	2009
发表期刊	chinesesciencebulletin
ISSN	1001-6538
卷号	54 期号:3 页码:430
摘要	Recent fossil discoveries have substantially reduced the morphological gap between non-avian and avian dinosaurs, yet avians including Archaeopteryx differ from non-avian theropods in their limb proportions. In particular, avians have proportionally longer and more robust forelimbs that are capable of supporting a large aerodynamic surface. Here we report on a new maniraptoran dinosaur, Anchiornis huxleyi gen. et sp. nov., based on a specimen collected from lacustrine deposits of uncertain age in western Liaoning, China. With an estimated mass of 110 grams, Anchiornis is the smallest known non-avian theropod dinosaur. It exhibits some wrist features indicative of high mobility, presaging the wing-folding mechanisms seen in more derived birds and suggesting rapid evolution of the carpus. Otherwise, Anchiornis is intermediate in general morphology between non-avian and avian dinosaurs, particularly with regard to relative forelimb length and thickness, and represents a transitional step toward the avian condition. In contrast with some recent comprehensive phylogenetic analyses, our phylogenetic analysis incorporates subtle morphological variations and recovers a conventional result supporting the monophyly of Avialae.
语种	英语
资助项目	[National Natural Science Foundation of China] ; [Chinese Academy of Sciences] ; [National Basic Research Program of China]
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/12080
专题	中科院古脊椎所（2000年以后）中国科学院古脊椎动物与古人类研究所
作者单位	1.中国科学院古脊椎动物与古人类研究所 2.American Museum of Natural History
第一作者单位	中国科学院古脊椎动物与古人类研究所
推荐引用方式 GB/T 7714	XU Xing,ZHAO Qi,NORELL Mark,et al. A new feathered maniraptoran dinosaur fossil that fills a morphological gap in avian origin[J]. chinesesciencebulletin,2009,54(3):430.
APA	XU Xing.,ZHAO Qi.,NORELL Mark.,SULLIVAN Corwin.,HONE David.,...&GUO Yu.(2009).A new feathered maniraptoran dinosaur fossil that fills a morphological gap in avian origin.chinesesciencebulletin,54(3),430.
MLA	XU Xing,et al."A new feathered maniraptoran dinosaur fossil that fills a morphological gap in avian origin".chinesesciencebulletin 54.3(2009):430.

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