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

doi:10.1144/jgs2021-061

	New holozoans with cellular resolution from the early Ediacaran Weng'an Biota, SW China
	Yin, Zongjun 3,4,5,6; Sun, Weichen 2,5,6; Reitner, Joachim 1; Zhu, Maoyan 3,5,6
刊名	JOURNAL OF THE GEOLOGICAL SOCIETY
	2022-03-28
页码	11
ISSN号	0016-7649
DOI	10.1144/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;
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
WOS研究方向	Geology
语种	英语
出版者	GEOLOGICAL SOC PUBL HOUSE
WOS记录号	WOS:000788761000001
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
内容类型	期刊论文
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
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.(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.