A NEW ENANTIORNITHINE BIRD FROM THE LOWER CRETACEOUS OF WESTERN LIAONING, CHINA, AND ITS IMPLICATIONS FOR EARLY AVIAN EVOLUTION

IVPP-IR > 古低等脊椎动物研究室

	A NEW ENANTIORNITHINE BIRD FROM THE LOWER CRETACEOUS OF WESTERN LIAONING, CHINA, AND ITS IMPLICATIONS FOR EARLY AVIAN EVOLUTION
	Hu, Dongyu 1; Xu, Xing 1,2; Hou, Lianhai 1,2; Sullivan, Corwin 2
	2012
发表期刊	JOURNAL OF VERTEBRATE PALEONTOLOGY
卷号	32 期号:3 页码:639-645
文章类型	Article
摘要	Recent studies have blurred the distinctness of two major avian groups: the Enantiornithes, a major radiation of early birds in the Cretaceous, and the Ornithuromorpha, the clade including extant birds. Here we describe a new enantiornithine bird from the Lower Cretaceous Jiufotang Formation of western Liaoning, China, Xiangornis shenmi, gen. et sp. nov., which further reduces the morphological gap between the two groups. Xiangornis shenmi has several enantiornithine features, including a furcula with a significantly elongated hypocleidium, a coracoid with a convex lateral margin, and a minor metacarpal that extends further distally than the major metacarpal. However, it also possesses some derived ornithurine features, such as a short alular metacarpal (about one-sixth as long as the major metacarpal) that is completely fused to the major metacarpal, a large extensor process on the alular metacarpal, proximal and distal fusion between the minor and major metacarpals, and an intermetacarpal space positioned significantly distal to the alular metacarpal. This new find indicates that a carpometacarpal morphology similar to that seen in modern birds probably evolved independently in enantiornithines and appeared earlier than in Ornithuromorpha, and demonstrates that character evolution in early birds was more complex than previously believed.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]	ORNITHURINE BIRD ; AVES ; ANATOMY ; MORPHOLOGY ; INSIGHT ; FOSSIL ; HEBEI
收录类别	SCI
语种	英语
WOS研究方向	Paleontology
WOS类目	Paleontology
WOS记录号	WOS:000303660400011
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/7301
专题	古低等脊椎动物研究室
作者单位	1.Shenyang Normal Univ, Inst Paleontol, Shenyang 110034, Peoples R China 2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Evolutionary Systemat Vertebrates, Beijing 100044, Peoples R China
推荐引用方式 GB/T 7714	Hu, Dongyu,Xu, Xing,Hou, Lianhai,et al. A NEW ENANTIORNITHINE BIRD FROM THE LOWER CRETACEOUS OF WESTERN LIAONING, CHINA, AND ITS IMPLICATIONS FOR EARLY AVIAN EVOLUTION[J]. JOURNAL OF VERTEBRATE PALEONTOLOGY,2012,32(3):639-645.
APA	Hu, Dongyu,Xu, Xing,Hou, Lianhai,&Sullivan, Corwin.(2012).A NEW ENANTIORNITHINE BIRD FROM THE LOWER CRETACEOUS OF WESTERN LIAONING, CHINA, AND ITS IMPLICATIONS FOR EARLY AVIAN EVOLUTION.JOURNAL OF VERTEBRATE PALEONTOLOGY,32(3),639-645.
MLA	Hu, Dongyu,et al."A NEW ENANTIORNITHINE BIRD FROM THE LOWER CRETACEOUS OF WESTERN LIAONING, CHINA, AND ITS IMPLICATIONS FOR EARLY AVIAN EVOLUTION".JOURNAL OF VERTEBRATE PALEONTOLOGY 32.3(2012):639-645.