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New holozoans with cellular resolution from the early Ediacaran Weng'an Biota, SW China

文献类型：期刊论文

作者Yin, Zongjun3,4,5,6; Sun, Weichen2,5,6; Reitner, Joachim1; Zhu, Maoyan3,5,6; Yin, Zongjun（殷宗军）; Zhu, Maoyan（朱茂炎）
刊名JOURNAL OF THE GEOLOGICAL SOCIETY
出版日期2022-03-28
页码11
ISSN号0016-7649
DOI10.1144/jgs2021-061
通讯作者Yin, Zongjun(zjyin@nigpas.ac.cn)
英文摘要Embryo-like fossils from the early Ediacaran Weng'an Biota (SW China, 609 myr ago), widely interpreted as holozoans, potentially provide insights into the early evolutionary development of metazoans and the rise of the animal kingdom. However, the biodiversity of the embryo-like fossil assemblage is largely underestimated and its more precise phylogenetic affinities within the holozoan tree are still under debate. We describe a new species of embryo-like fossil, Ostiosphaera rara n. gen. n. sp., from the Ediacaran Weng'an Biota. These 3D, phosphatized specimens exhibit a spherical morphology, a thick ornamented envelope with a circular opening and a membrane-bound, multicellular inner body. In terms of biological characteristics, O. rara shows similarities with a number of extant and fossil analogues, including testate amoebae, unicellular green algae, the cellular slime mould Fonticuida and co-occurring Weng'an embryo-like fossils. Although the phylogenetic affinity of O. rara is difficult to constrain precisely based on the available evidence, it is reasonable to follow the holozoan interpretation for these fossils because they share the same grade complexity with co-occurring embryo-like fossils, such as Megasphaera and Helicoforamina, in terms of the combination of biological features. These new holozoans resemble asexual reproductive gemmules of fossil and living demosponges in size, morphology, circular opening and cellular anatomy. If this similarity reflects biological affinity rather than convergent evolution, this discovery would force us to rethink the evolutionary history of Precambrian sponges.& nbsp;& nbsp;
WOS关键词VASE-SHAPED MICROFOSSILS ; GIANT SULFUR BACTERIA ; EMBRYO-LIKE FOSSILS ; ANIMAL EMBRYOS ; DOUSHANTUO FORMATION ; SPONGILLA-LACUSTRIS ; TESTATE AMEBAS ; MARINE SPONGE ; SOUTH CHINA ; CHUAR GROUP
资助项目Strategic Priority Research Program(B) of the Chinese Academy of Sciences (CAS)[XDB26000000] ; National Natural Science Foundation of China[42022010] ; National Natural Science Foundation of China[41921002] ; CAS Interdisciplinary Innovation Team[JCTD-2020-18] ; Youth Innovation Promotion Association of the CAS
WOS研究方向Geology
语种英语
WOS记录号WOS:000788761000001
出版者GEOLOGICAL SOC PUBL HOUSE
资助机构Strategic Priority Research Program(B) of the Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; CAS Interdisciplinary Innovation Team ; Youth Innovation Promotion Association of the CAS
源URL[http://ir.nigpas.ac.cn/handle/332004/40728]  
专题中国科学院南京地质古生物研究所
通讯作者Yin, Zongjun; Yin, Zongjun（殷宗军）
作者单位1.Univ Gottingen, Geosci Ctr, Dept Geobiol, D-37077 Gottingen, Germany
2.Univ Sci & Technol China, Hefei 230026, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
4.Univ Chinese Acad Sci, Nanjing Coll, Nanjing 210008, Peoples R China
5.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing 210008, Peoples R China
6.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China
推荐引用方式
GB/T 7714		 Yin, Zongjun,Sun, Weichen,Reitner, Joachim,et al. New holozoans with cellular resolution from the early Ediacaran Weng'an Biota, SW China[J]. JOURNAL OF THE GEOLOGICAL SOCIETY,2022:11.
APA Yin, Zongjun,Sun, Weichen,Reitner, Joachim,Zhu, Maoyan,Yin, Zongjun,&Zhu, Maoyan.(2022).New holozoans with cellular resolution from the early Ediacaran Weng'an Biota, SW China.JOURNAL OF THE GEOLOGICAL SOCIETY,11.
MLA Yin, Zongjun,et al."New holozoans with cellular resolution from the early Ediacaran Weng'an Biota, SW China".JOURNAL OF THE GEOLOGICAL SOCIETY (2022):11.

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来源：南京地质古生物研究所

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