Complex embryos displaying bilaterian characters from Precambrian Doushantuo phosphate deposits, Weng'an, Guizhou, China

	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
刊名	PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
	2009
卷号	106 期号:45 页码:19056-19060
关键词	early animal evolution early metazoan evolution nondestructive 3-D reconstruction precambrian ediacaran embryos Weng'an biota
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
英文摘要	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.
学科主题	Science & Technology - Other Topics
类目[WOS]	Multidisciplinary Sciences
研究领域[WOS]	Science & Technology - Other Topics
原文出处	SCI
语种	英语
WOS记录号	WOS:000271637500034
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/240202]
专题	高能物理研究所_院士
作者单位	中国科学院高能物理研究所
推荐引用方式 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.