A new enantiornitine bird with four long rectrices from the early Cretaceous of northern Hebei, China

IVPP-IR > 中科院古脊椎所（2000年以后）

	A new enantiornitine bird with four long rectrices from the early Cretaceous of northern Hebei, China
	Zheng Xiaoting ; Zhang Zihui ; Hou Lianhai ; Zhang, ZH (reprint author), Capital Normal Univ, Coll Life Sci, Beijing 100037, Peoples R China.
	2007-10-01
发表期刊	ACTA GEOLOGICA SINICA-ENGLISH EDITION
ISSN	1000-9515
卷号	81 期号:5 页码:703-708
文章类型	Article
摘要	Paraprotopteryx gracilis, a new enantiornithine bird from the Early Cretaceous Yixian Formation in Fengning, northern Hebei Province is erected, based on the following characters: Y-shaped furcula with a long hypocleidum and a much narrow interclavicular angle, and the morphology of the sternum are different from other enantiornithines. Additionally, alular digit bearing the biggest manual claw extends distally to the distal end of the major metacarpal; the minor metacarpal is slender than the major metacarpal. Carpometacarpus only fused proximally; astragalus and calcaneum partially fused to one another but unfused to the tibia. This is the first record of Mesozoic birds in having four long rectrices, which may represent morphologically a secondary sexual character, an intermediate stage from elongated scale to branched feather, and possess functional advantage in supplementing the lifting surface to compensate the unskilled flight.; Paraprotopteryx gracilis, a new enantiornithine bird from the Early Cretaceous Yixian Formation in Fengning, northern Hebei Province is erected, based on the following characters: Y-shaped furcula with a long hypocleidum and a much narrow interclavicular angle, and the morphology of the sternum are different from other enantiornithines. Additionally, alular digit bearing the biggest manual claw extends distally to the distal end of the major metacarpal; the minor metacarpal is slender than the major metacarpal. Carpometacarpus only fused proximally; astragalus and calcaneum partially fused to one another but unfused to the tibia. This is the first record of Mesozoic birds in having four long rectrices, which may represent morphologically a secondary sexual character, an intermediate stage from elongated scale to branched feather, and possess functional advantage in supplementing the lifting surface to compensate the unskilled flight.
关键词	Early Cretaceous Paraprotopteryx Gracilis Enantiornithine Rectrices Fengning Hebei Province
WOS标题词	Science & Technology ; Physical Sciences
关键词[WOS]	NORTHWESTERN CHINA ; PARTIAL SKELETON ; GANSU PROVINCE ; MESOZOIC BIRD ; AVIAN FLIGHT ; EVOLUTION ; ORIGIN ; SKULL ; AVES
收录类别	SCI
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000250766700004
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/3299
专题	中科院古脊椎所（2000年以后）
通讯作者	Zhang, ZH (reprint author), Capital Normal Univ, Coll Life Sci, Beijing 100037, Peoples R China.
作者单位	1.Capital Normal Univ, Coll Life Sci, Beijing 100037, Peoples R China 2.Tianyu Nat Museum, Pingyi 273300, Peoples R China 3.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China
推荐引用方式 GB/T 7714	Zheng Xiaoting,Zhang Zihui,Hou Lianhai,et al. A new enantiornitine bird with four long rectrices from the early Cretaceous of northern Hebei, China[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2007,81(5):703-708.
APA	Zheng Xiaoting,Zhang Zihui,Hou Lianhai,&Zhang, ZH .(2007).A new enantiornitine bird with four long rectrices from the early Cretaceous of northern Hebei, China.ACTA GEOLOGICA SINICA-ENGLISH EDITION,81(5),703-708.
MLA	Zheng Xiaoting,et al."A new enantiornitine bird with four long rectrices from the early Cretaceous of northern Hebei, China".ACTA GEOLOGICA SINICA-ENGLISH EDITION 81.5(2007):703-708.

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