Cellular preservation of excysting developmental stages of new eukaryotes from the early Ediacaran Weng' an Biota | |
Landon, Emma N. U.3; Liu, Peng-Ju4; Yin, Zong-Jun (殷宗军)1,5; Sun, Wei-Chen (孙玮辰)1,2,5; Shang, Xiao-Dong4; Donoghue, Philip C. J.3 | |
刊名 | PALAEOWORLD |
2019-12-01 | |
卷号 | 28期号:4页码:461-468 |
关键词 | Weng' an Biota Ediacaran Acritarch Eukaryote Excystment mechanism |
ISSN号 | 1871-174X |
DOI | 10.1016/j.palwor.2019.05.005 |
英文摘要 | The Ediacaran Weng' an Biota provides a unique window on marine diversity during the interval in which the fundamental animal body plans were being established. Here we describe a previously unreported component of the assemblage, millimeter-scale encysted spheres that exhibit a characteristic but simple slit-shaped excystment mechanism (Sporosphaera guizhouensis n. gen. n. sp.), reminiscent of acritarchs. The cysts contain a large inner body or numerous small discrete membrane-bounded bodies. It is possible that the inner bodies represent disaggregated cells of a multicellular body, like an embryo, but there is no evidence to support this interpretation and the occurrence of the excystment structure is not readily compatible with an embryo interpretation. Rather, we interpret the encysted organisms as multicellular stages within the lifecycle of otherwise probably unicellular eukaryotes. The developmental mode exhibited by Sporosphaera, incorporating a resting stage, implies an adaptation to adverse environmental conditions. This parallels the appearance of Large Ornamented Ediacaran Microfossils (LOEMs) which have been interpreted as diapause stages in the embryology of early animals. Sporosphaera is distinct from LOEMs by ornamentation instead of size, which may implicate that not all LOEMs are animal embryos, if any. (C) 2019 Elsevier Ireland Ltd Elsevier B.V. and Nanjing Institute of Geology and Palaeontology, CAS. Published by Elsevier B.V. All rights reserved. |
资助项目 | NERC Thematic Grant[NE/P013678/1] ; Royal Society Newton Advanced Fellowship ; NERC GW4+ DTP Studentship ; National Natural Science Foundation of China[41672013] ; National Natural Science Foundation of China[41572016] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2017360] |
WOS关键词 | EMBRYO-LIKE FOSSILS ; ANIMAL EMBRYOS ; DOUSHANTUO FORMATION ; ORIGIN ; MICROFOSSILS ; EVOLUTION ; NUCLEI |
WOS研究方向 | Paleontology |
语种 | 英语 |
出版者 | ELSEVIER |
WOS记录号 | WOS:000499969100004 |
资助机构 | NERC Thematic Grant ; Royal Society Newton Advanced Fellowship ; NERC GW4+ DTP Studentship ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences |
内容类型 | 期刊论文 |
源URL | [http://ir.nigpas.ac.cn/handle/332004/29416] |
专题 | 中国科学院南京地质古生物研究所 |
通讯作者 | Yin, Zong-Jun (殷宗军); Donoghue, Philip C. J. |
作者单位 | 1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China 3.Univ Bristol, Sch Earth Sci, Life Sci Bldg,Tyndall Ave, Bristol BS8 1TQ, Avon, England 4.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China 5.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing 210008, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Landon, Emma N. U.,Liu, Peng-Ju,Yin, Zong-Jun ,et al. Cellular preservation of excysting developmental stages of new eukaryotes from the early Ediacaran Weng' an Biota[J]. PALAEOWORLD,2019,28(4):461-468. |
APA | Landon, Emma N. U.,Liu, Peng-Ju,Yin, Zong-Jun ,Sun, Wei-Chen ,Shang, Xiao-Dong,&Donoghue, Philip C. J..(2019).Cellular preservation of excysting developmental stages of new eukaryotes from the early Ediacaran Weng' an Biota.PALAEOWORLD,28(4),461-468. |
MLA | Landon, Emma N. U.,et al."Cellular preservation of excysting developmental stages of new eukaryotes from the early Ediacaran Weng' an Biota".PALAEOWORLD 28.4(2019):461-468. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论