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Complex embryos displaying bilaterian characters from Precambrian Doushantuo phosphate deposits, Weng'an, Guizhou, China
Chen, JY; Bottjer, DJ; Li G(黎刚); Li, G; Hadfield, MG; Gao, F; Cameron, AR; Zhang, CY; Xian, DC; Tafforeau, P; Liao, X; Yin, ZJ; Xian DC(冼鼎昌)
2009
发表期刊PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷号106期号:45页码:19056-19060
通讯作者[Chen, Jun-Yuan ; Zhang, Chen-Yu ; Liao, Xin ; Yin, Zong-Jun] Nanjing Univ, Inst Evo Dev Biol, LPS Nanjing Inst Geol & Paleontol, Nanjing 210093, Peoples R China ; [Chen, Jun-Yuan ; Zhang, Chen-Yu ; Liao, Xin ; Yin, Zong-Jun] Nanjing Univ, State Key Lab Pharmaceut Biotechnol, Nanjing 210093, Peoples R China ; [Bottjer, David J.] Univ So Calif, Dept Earth Sci, Los Angeles, CA 90089 USA ; [Li, Gang ; Xian, Ding-Chang] Inst High Energy Phys, Beijing 100049, Peoples R China ; [Hadfield, Michael G.] Univ Hawaii Manoa, Kewalo Marine Lab, Honolulu, HI 96813 USA ; [Gao, Feng ; Cameron, Andrew R.] CALTECH, Div Biol, Pasadena, CA 91125 USA ; [Tafforeau, Paul] European Synchrotron Radiat Facil, F-38043 Grenoble, France
文章类型Article
摘要Three-dimensionally preserved embryos from the Precambrian Ediacaran Doushantuo Formation, Weng'an, Guizhou, southern China, have attracted great attention as the oldest fossil evidence yet found for multicellular animal life on Earth. Many embryos are early cleavage embryos and most of them yield a limited phylogenetic signal. Here we report the discovery of two Doushantuo embryos that are three-dimensionally preserved and complex. Imaging techniques using propagation phase-contrast based synchrotron radiation microtomography (PPC-SR-mu CT) reveal that the organization of cells demonstrates several bilaterian features, including the formation of anterior-posterior, dorso-ventral, and right-left polarities, and cell differentiation. Unexpectedly, our observations show a noticeable difference in organization patterns between the embryos, suggesting that they represent two distinct taxa. These embryos provide further evidence for the presence of bilaterian animals in the Doushantuo biota. Furthermore, these bilaterians had already diverged into distantly related groups at least 40 million years before the Cambrian radiation, indicating that the last common ancestor of the bilaterians lived much earlier than is usually thought.
关键词early animal evolution early metazoan evolution nondestructive 3-D reconstruction precambrian ediacaran embryos Weng'an biota
学科领域Science & Technology - Other Topics
研究领域[WOS]Science & Technology - Other Topics ; Science & Technology - Other Topics
DOI10.1073/pnas.0904805106
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语种英语
研究领域[WOS]Science & Technology - Other Topics ; Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
WOS记录号WOS:000271637500034
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被引频次:39[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240202
专题院士
作者单位中国科学院高能物理研究所
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Chen, JY,Bottjer, DJ,Li G,et al. Complex embryos displaying bilaterian characters from Precambrian Doushantuo phosphate deposits, Weng'an, Guizhou, China[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2009,106(45):19056-19060.
APA Chen, JY.,Bottjer, DJ.,黎刚.,Li, G.,Hadfield, MG.,...&冼鼎昌.(2009).Complex embryos displaying bilaterian characters from Precambrian Doushantuo phosphate deposits, Weng'an, Guizhou, China.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,106(45),19056-19060.
MLA Chen, JY,et al."Complex embryos displaying bilaterian characters from Precambrian Doushantuo phosphate deposits, Weng'an, Guizhou, China".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 106.45(2009):19056-19060.
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