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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)
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| 2009 | |
| Source Publication | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
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| Volume | 106Issue: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 |
| Subtype | Article |
| Abstract | 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. |
| Keyword | early animal evolution early metazoan evolution nondestructive 3-D reconstruction precambrian ediacaran embryos Weng'an biota |
| Subject Area | Science & Technology - Other Topics |
| DOI | 10.1073/pnas.0904805106 |
| URL | 查看原文 |
| Indexed By | ADS |
| Language | 英语 |
| WOS Research Area | Science & Technology - Other Topics |
| WOS Subject | Multidisciplinary Sciences |
| WOS ID | WOS:000271637500034 |
| ADS Bibcode | 2009PNAS..10619056C |
| ADS URL | https://ui.adsabs.harvard.edu/abs/2009PNAS..10619056C |
| ADS CITATIONS | https://ui.adsabs.harvard.edu/abs/2009PNAS..10619056C/citations |
| Citation statistics |
Cited Times:21 [ADS]
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| Document Type | 期刊论文 |
| Identifier | http://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 Affilication | Institute 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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