中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 古脊椎动物与古人类研究所
  3. 中国科学院古脊椎动物与古人类研究所
  4. 图书馆1
Fossil jawless fish from China foreshadows early jawed vertebrate anatomy

文献类型：期刊论文

作者Gai, Zhikun1,2; Donoghue, Philip C. J.1; Zhu, Min2; Janvier, Philippe3; Stampanoni, Marco4,5; phil.donoghue@bristol.ac.uk
刊名NATURE
出版日期2011-08-18
卷号476期号:7360页码:324-327
关键词Tomographic Microscopy Internal Anatomy Neural Crest Origin Evolution Agnathans Phylogeny Lamprey Head
ISSN号0028-0836
文献子类Article
英文摘要Most living vertebrates are jawed vertebrates (gnathostomes), and the living jawless vertebrates (cyclostomes), hagfishes and lampreys, provide scarce information about the profound reorganization of the vertebrate skull during the evolutionary origin of jaws(1-9). The extinct bony jawless vertebrates, or 'ostracoderms', are regarded as precursors of jawed vertebrates and provide insight into this formative episode in vertebrate evolution(8-14). Here, using synchrotron radiation X-ray tomography(15,16), we describe the cranial anatomy of galeaspids, a 435-370-million-year-old 'ostracoderm' group from China and Vietnam(17). The paired nasal sacs of galeaspids are located anterolaterally in the braincase, and the hypophyseal duct opens anteriorly towards the oral cavity. These three structures (the paired nasal sacs and the hypophyseal duct) were thus already independent of each other, like in gnathostomes and unlike in cyclostomes and osteostracans (another 'ostracoderm' group), and therefore have the condition that current developmental models regard as prerequisites for the development of jaws(1-3). This indicates that the reorganization of vertebrate cranial anatomy was not driven deterministically by the evolutionary origin of jaws but occurred stepwise, ultimately allowing the rostral growth of ectomesenchyme that now characterizes gnathostome head development(1-3).
URL标识查看原文
WOS关键词TOMOGRAPHIC MICROSCOPY ; INTERNAL ANATOMY ; NEURAL CREST ; ORIGIN ; EVOLUTION ; AGNATHANS ; PHYLOGENY ; LAMPREY ; HEAD
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000294206500036
公开日期2013-11-27
源URL[http://119.78.100.205/handle/311034/4398]  
专题古脊椎动物与古人类研究所_图书馆1
通讯作者phil.donoghue@bristol.ac.uk
作者单位1.Univ Bristol, Sch Earth Sci, Bristol BS8 1RJ, Avon, England
2.Chinese Acad Sci, Lab Evolutionary Systemat Vertebrates, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China
3.Museum Natl Hist Nat, CNRS, UMR 7207, F-75231 Paris 05, France
4.Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland
5.Univ & ETH Zurich, Inst Biomed Engn, CH-8092 Zurich, Switzerland
推荐引用方式
GB/T 7714		 Gai, Zhikun,Donoghue, Philip C. J.,Zhu, Min,et al. Fossil jawless fish from China foreshadows early jawed vertebrate anatomy[J]. NATURE,2011,476(7360):324-327.
APA Gai, Zhikun,Donoghue, Philip C. J.,Zhu, Min,Janvier, Philippe,Stampanoni, Marco,&phil.donoghue@bristol.ac.uk.(2011).Fossil jawless fish from China foreshadows early jawed vertebrate anatomy.NATURE,476(7360),324-327.
MLA Gai, Zhikun,et al."Fossil jawless fish from China foreshadows early jawed vertebrate anatomy".NATURE 476.7360(2011):324-327.

入库方式： OAI收割

来源：古脊椎动物与古人类研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。