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

文献类型：期刊论文

作者Wang, Min1,2; Hu, Han1
刊名ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY
出版日期2017
卷号300期号:1页码:62-75
关键词Zygoma Function Evolution Jugal Bar Quadratojugal Cranial Kinesis Bird Cretaceous
DOI10.1002/ar.23446
文献子类Article
英文摘要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.
WOS关键词JEHOL BIOTA ; BASAL ORNITHUROMORPH ; CRANIAL MORPHOLOGY ; ORNITHURINE BIRD ; EARLY EVOLUTION ; FOSSIL EVIDENCE ; AVIAN SKULL ; CHINA ; ARCHAEOPTERYX ; THEROPODA
WOS研究方向Anatomy & Morphology
语种英语
WOS记录号WOS:000392874500007
资助机构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)
源URL[http://124.16.247.212/handle/311034/7512]  
专题古脊椎动物与古人类研究所_图书馆1
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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来源：古脊椎动物与古人类研究所

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