A dromaeosaurid dinosaur with a filamentous integument from the Yixian Formation of China

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	A dromaeosaurid dinosaur with a filamentous integument from the Yixian Formation of China
	Xu, X ; Wang, XL ; Wu, XC
	1999-09-16
发表期刊	NATURE
卷号	401 期号:6750 页码:262-266
文章类型	Article
摘要	Dromaeosaurids, despite their notoriety, are poorly characterized meat-eating dinosaurs, and were previously known only from disarticulated or fragmentary specimens(1). Many studies have denied their close relationship to birds(2,3). Here we report the best represented and probably the earliest dromaeosaurid yet discovered, Sinornithosaurus millenii gen. et sp. nov., from Sihetun, the famous Mesozoic fish-dinosaur-bird locality in China(4,5). Sinornithosaurus not only greatly increases our knowledge of Dromaeosauridae but also provides evidence for a filamentous integument in this group. It is remarkably similar to early birds postcranially. The shoulder girdle shows that terrestrial dromaeosaurids had attained the prerequisites for powered, flapping flight(6), supporting the idea that bird flight originated from the ground up(7,8). The discovery of Sinornithosaurus widens the distribution of integumentary filaments among non-avian theropods(5,9,10). Phylogenetic analysis indicates that, among known theropods with integumentary filaments or feathers(2,5), Dromaeosauridae is the most bird-like, and is more closely related to birds than is Troodontidae.
WOS标题词	Science & Technology
关键词[WOS]	BIRDS ; THEROPODA ; ORIGIN
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:000082678400049
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/1968
专题	古低等脊椎动物研究室
作者单位	1.Acad Sinica, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China 2.Changchun Univ Sci & Technol, Nat Hist Museum, Changchun 130026, Peoples R China 3.Univ Calgary, Dept Biol Sci, Vertebrate Morphol Res Grp, Calgary, AB T2N 1N4, Canada
推荐引用方式 GB/T 7714	Xu, X,Wang, XL,Wu, XC. A dromaeosaurid dinosaur with a filamentous integument from the Yixian Formation of China[J]. NATURE,1999,401(6750):262-266.
APA	Xu, X,Wang, XL,&Wu, XC.(1999).A dromaeosaurid dinosaur with a filamentous integument from the Yixian Formation of China.NATURE,401(6750),262-266.
MLA	Xu, X,et al."A dromaeosaurid dinosaur with a filamentous integument from the Yixian Formation of China".NATURE 401.6750(1999):262-266.

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