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A diverse organic-walled microfossil assemblage from the Mesoproterozoic Xiamaling Formation, North China
Miao, Lanyun(苗兰云)1,2; Moczydlowska, Malgorzata3; Zhu, Maoyan(朱茂炎)1,2,4
2021-07-15
发表期刊PRECAMBRIAN RESEARCH
ISSN0301-9268
卷号360页码:21
摘要

The mid-Proterozoic (ca. 1.85-0.85 Ga) might have been environmentally "boring", but was a crucial interval of time for the early establishment of eukaryotic life on Earth. The Mesoproterozoic shale-dominated Xiamaling Formation (ca. 1.4-1.35 Ga) in North China preserved abundant organic-walled microfossils, some of which were of eukaryotic affinity but their taxonomic diversity and evolutionary implications remain unclear. In this paper, we present a palynological study of the lower Xiamaling Formation in the northern Tianjin Municipality. Similar to other Mesoproterozoic microbiotas, this assemblage consists of well-preserved and diverse spheroidal to ellipsoidal vesicles, filamentous microfossils and cellular aggregates. In total, 36 species belonging to 28 genera are identified, including 1 new species Quadrimurus clavatus gen. et sp. nov., and 5 unnamed forms. Majority of these taxa are recognised for the first time from this formation, indicating a richer assemblage than previously known. Although most taxa are of unknown biological affinities, this microbiota is thought to be composed of prokaryotic and eukaryotic microorganisms, in which 12 taxa are inferred to be eukaryotic. These microfossils indicate a moderate diversity of eukaryotic life documented in the Xiamaling Formation, which is consistent with other microbiotas in the mid-Proterozoic. The presence of Jixiania lineata Yan, 1986 (=Lineaforma elongata Vorob'eva and Sergeev, 2015) in North China extends its geographic distribution and further enhances its potential as index fossil for the early Mesoproterozoic strata. The Xiamaling assemblage provides one of the broader pictures of the Mesoproterozoic biosphere, in which eukaryotes were predominantly protistan-grade microorganisms.

关键词Eukaryote Organic-walled microfossil Mesoproterozoic Xiamaling Formation North China
DOI10.1016/j.precamres.2021.106235
收录类别SCI
语种英语
关键词[WOS]MAJOR EVOLUTIONARY TRANSITIONS ; GAOYUZHUANG FORMATION ; RUYANG GROUP ; MCARTHUR GROUP ; MICRO-FOSSILS ; OFFICER BASIN ; ALGAL MATS ; CRATON ; AGE ; SUPERGROUP
资助项目National Natural Science Foundation of China[41902018] ; National Natural Science Foundation of China[41921002] ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB18000000] ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB26000000]
WOS研究方向Geology
WOS类目Geosciences, Multidisciplinary
WOS记录号WOS:000654275400003
项目资助者National Natural Science Foundation of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences
出版者ELSEVIER
文献类型期刊论文
条目标识符http://ir.nigpas.ac.cn/handle/332004/38286
专题中国科学院南京地质古生物研究所
通讯作者Zhu, Maoyan(朱茂炎)
作者单位1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, 39 East Beijing Rd, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, 39 East Beijing Rd, Nanjing 210008, Peoples R China
3.Uppsala Univ, Dept Earth Sci, Palaeobiol, Villavagen 16, SE-75236 Uppsala, Sweden
4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China
第一作者单位中国科学院南京地质古生物研究所
通讯作者单位中国科学院南京地质古生物研究所
推荐引用方式
GB/T 7714
Miao, Lanyun,Moczydlowska, Malgorzata,Zhu, Maoyan. A diverse organic-walled microfossil assemblage from the Mesoproterozoic Xiamaling Formation, North China[J]. PRECAMBRIAN RESEARCH,2021,360:21.
APA Miao, Lanyun,Moczydlowska, Malgorzata,&Zhu, Maoyan.(2021).A diverse organic-walled microfossil assemblage from the Mesoproterozoic Xiamaling Formation, North China.PRECAMBRIAN RESEARCH,360,21.
MLA Miao, Lanyun,et al."A diverse organic-walled microfossil assemblage from the Mesoproterozoic Xiamaling Formation, North China".PRECAMBRIAN RESEARCH 360(2021):21.
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