A Comparative Morphological Study of the Jugal and Quadratojugal in Early Birds and Their Dinosaurian Relatives

doi:10.1002/ar.23446

IVPP-IR > 中科院古脊椎所（2000年以后）

	A Comparative Morphological Study of the Jugal and Quadratojugal in Early Birds and Their Dinosaurian Relatives
	Wang, Min 1,2; Hu, Han 1
	2017
发表期刊	ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY
卷号	300 期号:1 页码:62-75
文章类型	Article
摘要	The zygoma (called jugal bar) in modern birds accounts for a large portion of the ventral margin of the cranium. As a delicate and rod-like element, the jugal bar is functionally integrated into the avian cranial kinesis, a unique property that allows the beak to be elevated or depressed with respect to the braincase and thus distinguishes birds from all other modern vertebrates. Developmental studies show that the jugal bar of modern birds is formed by the fusion of the jugal and quadratojugal that are ossified from separated centers. However, those two bones are unfused and exhibit complicated morphological variations in basal birds and their dinosaurian relatives. Moreover, the jugal and quadratojugal form rigid articulations with the postorbital and squamosal, respectively, consequently hindering the movement of the upper jaw in most non-avian dinosaurs and some basal birds. A comparative study of the jugal and quadratojugal morphology of basal birds and their close relatives such as dromaeosaurids and oviraptorids elucidates how modern birds has achieved its derived jugal bar morphology, and sheds light on the evolution of the postorbital configuration of birds. We propose that numerous morphological modifications of those two elements (morphology changes and reduced articulation with other elements) took place in early bird history, and some of them pertinent to the refinement of the cranial kinesis. Anat Rec, 300:62-75, 2017. (c) 2016 Wiley Periodicals, Inc.
关键词	Zygoma Function Evolution Jugal Bar Quadratojugal Cranial Kinesis Bird Cretaceous
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
DOI	10.1002/ar.23446
关键词[WOS]	JEHOL BIOTA ; BASAL ORNITHUROMORPH ; CRANIAL MORPHOLOGY ; ORNITHURINE BIRD ; EARLY EVOLUTION ; FOSSIL EVIDENCE ; AVIAN SKULL ; CHINA ; ARCHAEOPTERYX ; THEROPODA
收录类别	SCI
语种	英语
项目资助者	National Natural Science Foundation of China(41502002) ; Youth Innovation Promotion Association (CAS)(2016073) ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS)(153111) ; National Basic Research Program of China 973 Program(2012CB821906)
WOS研究方向	Anatomy & Morphology
WOS类目	Anatomy & Morphology
WOS记录号	WOS:000392874500007
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/7512
专题	中科院古脊椎所（2000年以后）
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing, Peoples R China 2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Wang, Min,Hu, Han. A Comparative Morphological Study of the Jugal and Quadratojugal in Early Birds and Their Dinosaurian Relatives[J]. ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY,2017,300(1):62-75.
APA	Wang, Min,&Hu, Han.(2017).A Comparative Morphological Study of the Jugal and Quadratojugal in Early Birds and Their Dinosaurian Relatives.ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY,300(1),62-75.
MLA	Wang, Min,et al."A Comparative Morphological Study of the Jugal and Quadratojugal in Early Birds and Their Dinosaurian Relatives".ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY 300.1(2017):62-75.

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