Phase contrast synchrotron X-ray microtomography of Ediacaran (Doushantuo) metazoan microfossils: Phylogenetic diversity and evolutionary implications

doi:10.1016/j.precamres.2009.04.004

IHEP OpenIR > 院士

	Phase contrast synchrotron X-ray microtomography of Ediacaran (Doushantuo) metazoan microfossils: Phylogenetic diversity and evolutionary implications
	Chen, JY; Bottjer, DJ; Davidson, EH; Li, G; Gao, F; Cameron, RA; Hadfield, MG; Xian, DC; Tafforeau, P; Jia, QJ; Sugiyama, H; Tang, R; Li G(黎刚); Xian DC(冼鼎昌); Jia QJ(贾全杰)
	2009
发表期刊	PRECAMBRIAN RESEARCH (IF:3.843[JCR-2016],4.657[5-Year])
卷号	173 期号:1-4 页码:#REF!
通讯作者	Chen, JY (reprint author), Nanjing Univ, LPS, Nanjing Inst Geol & Paleontol, Inst Evo Dev Biol, Eastern Beijing Rd, Nanjing 210093, Peoples R China.
文章类型	Article
摘要	Microfossils from the Ediacaran Weng'an Phosphate Member of the Doushantuo Formation (Guizhou Province, southern China) have received widespread attention. The Doushantuo, which overlies the glacial deposits of the Nantuo Formation, was deposited following the Marinoan glaciation, the last extensive glaciation of Snowball Earth. Radiometric age dating indicates that the Doushantuo is older than 580 my, and hence that these microfossils are older than the Ediacara Biota. However, the diversity represented by these fossils has yet to be fully documented. A recent technological approach that has increasingly been used to image fossils, propagation phase contrast synchrotron X-ray microtomography, has allowed non-destructive study of both exterior and interior features of a variety of Doushantuo microfossils from the gray facies of the Weng'an Phosphate Member, cropping out along the axis of the Mt. Beidou anticline. Studies of Doushantuo embryos demonstrate the existence of a large suite of modern embryonic features, including macromeres and micromeres, cell lineage, polar lobes, compacted epithelia, equal and unequal cleavage, blastulation and gastrulation, and chorionic protection. Because embryos such as those here studied provide only a limited amount of phylogenetic information, and because adult metazoans of the types that produced these embryos have yet to be discovered in Doushantuo-age rocks, these fossilized embryonic forms can at present be assigned only to the various superclades represented amongst living Metazoa. The diversity of the embryos here studied suggests that the metazoan fauna of the Doushantuo may well have included animals of poriferan, cnidarian, and both protostomial (representatives possibly of basal protostome lineages) and deuterostomial affinity. If this interpretation is correct, it would then follow that the last common ancestor of the bilaterian metazoan lineage, as well as the last common ancestor of sponges, cnidarians and bilaterians. pre-dated deposition of the Doushantuo strata. (C) 2009 Elsevier B.V. All rights reserved.
关键词	Precambrian embryos Doushantuo Animal evolution Weng'an biota Early animal diversification
学科领域	Geology
DOI	10.1016/j.precamres.2009.04.004
收录类别	SCI ; ADS
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000269297400019
ADS Bibcode	2009PreR..173..191C
ADS URL	https://ui.adsabs.harvard.edu/abs/2009PreR..173..191C
ADS引文	https://ui.adsabs.harvard.edu/abs/2009PreR..173..191C/citations
引用统计	正在获取... 被引频次：26 [ADS]
文献类型	期刊论文
条目标识符	https://ir.ihep.ac.cn/handle/311005/226826
专题	院士
推荐引用方式 GB/T 7714	Chen, JY,Bottjer, DJ,Davidson, EH,et al. Phase contrast synchrotron X-ray microtomography of Ediacaran (Doushantuo) metazoan microfossils: Phylogenetic diversity and evolutionary implications[J]. PRECAMBRIAN RESEARCH,2009,173(1-4):#REF!.
APA	Chen, JY.,Bottjer, DJ.,Davidson, EH.,Li, G.,Gao, F.,...&贾全杰.(2009).Phase contrast synchrotron X-ray microtomography of Ediacaran (Doushantuo) metazoan microfossils: Phylogenetic diversity and evolutionary implications.PRECAMBRIAN RESEARCH,173(1-4),#REF!.
MLA	Chen, JY,et al."Phase contrast synchrotron X-ray microtomography of Ediacaran (Doushantuo) metazoan microfossils: Phylogenetic diversity and evolutionary implications".PRECAMBRIAN RESEARCH 173.1-4(2009):#REF!.