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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
Source PublicationPROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume106Issue:45Pages:19056-19060
Corresponding Author[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
SubtypeArticle
AbstractThree-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.
Keywordearly animal evolution early metazoan evolution nondestructive 3-D reconstruction precambrian ediacaran embryos Weng'an biota
Subject AreaScience & Technology - Other Topics
DOI10.1073/pnas.0904805106
URL查看原文
Indexed ByADS
Language英语
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000271637500034
ADS Bibcode2009PNAS..10619056C
ADS URLhttps://ui.adsabs.harvard.edu/abs/2009PNAS..10619056C
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2009PNAS..10619056C/citations
Citation statistics
Cited Times:21 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/240202
Collection院士
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
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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