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Implications for Ediacaran biological evolution from the ca. 602 Ma Lantian biota in China
Yang, Chuan1,2; Li, Yang1; Selby, David3; Wan, Bin (万斌))4; Guan, Chengguo(关成国)4; Zhou, Chuanming (周传明)4; Li, Xian-Hua1,4
2022-02-11
Source PublicationGEOLOGY
ISSN0091-7613
Pages5
Abstract

The morphologically differentiated benthic macrofossils of algae and putative animal affinities of the Lantian biota in China represents the oldest known Ediacaran macroscopic eukaryotic assemblage. Although the biota provides remarkable insights into the early evolution of complex macroeukaryotes in the Ediacaran, the uncertainty in its age has hampered any robust biological evaluation. We resolve this issue by applying a petrographic-guided rhenium-osmium (Re-Os) organic-bearing sedimentary unit study on the Lantian biota. This work confines a minimum age for the first appearance of the Lantian biota to 602 +/- 7 Ma (2 sigma, including decay constant uncertainty). This new Re-Os date confirms that the Lantian biota is of early-mid Ediacaran age and temporally distinct from the typical Ediacaran macrobiotas. Our results indicate that the differentiation and radiation of macroscopic eukaryotes, and the evolution of the primitive, erect epibenthic ecosystem, occurred in the early-mid Ediacaran and were associated with highly fluctuating oceanic redox conditions. The radiogenic initial 187Os/188Os ratios derived from the Lantian (1.14 +/- 0.02) and other Ediacaran shales invoke oxidative weathering of upper continental crust in the early-middle Ediacaran, which may have stimulated the evolution of life and oceanic-atmospheric oxygenation. Integrated with published Ediacaran chronological and geochemical data, our new Re-Os geochemical study of the Lantian black shale provides a refined, time-calibrated record of environment and eukaryote evolution during the Ediacaran.

DOI10.1130/G49734.1
Indexed BySCI
Language英语
WOS KeywordTRACE FOSSILS ; BLACK SHALE ; SOUTH CHINA ; CARBON ; APPEARANCE ; ANIMALS ; OCEANS ; RISE ; BODY ; LIFE
Funding ProjectNational Natural Science Foundation of China[42022022] ; National Natural Science Foundation of China[41972005] ; National Natural Science Foundation of China[41921002] ; Strategic Priority Research Program B of the Chinese Academy of Sciences[XDB18030301] ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; Dida Scholarship of the China University of Geosciences, Wuhan
WOS Research AreaGeology
WOS SubjectGeology
WOS IDWOS:000754723900001
Funding OrganizationNational Natural Science Foundation of China ; Strategic Priority Research Program B of the Chinese Academy of Sciences ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; Dida Scholarship of the China University of Geosciences, Wuhan
PublisherGEOLOGICAL SOC AMER, INC
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/40479
Collection中国科学院南京地质古生物研究所
Corresponding AuthorLi, Yang
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.British Geol Survey, Geochronol & Tracers Facil, Keyworth NG12 5GG, Notts, England
3.Univ Durham, Dept Earth Sci, Durham DH1 3LE, England
4.Nanjing Inst Geol & Palaeontol, Ctr Excellence Life & Paleoenvironm, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China
Recommended Citation
GB/T 7714
Yang, Chuan,Li, Yang,Selby, David,et al. Implications for Ediacaran biological evolution from the ca. 602 Ma Lantian biota in China[J]. GEOLOGY,2022:5.
APA Yang, Chuan.,Li, Yang.,Selby, David.,Wan, Bin .,Guan, Chengguo.,...&Li, Xian-Hua.(2022).Implications for Ediacaran biological evolution from the ca. 602 Ma Lantian biota in China.GEOLOGY,5.
MLA Yang, Chuan,et al."Implications for Ediacaran biological evolution from the ca. 602 Ma Lantian biota in China".GEOLOGY (2022):5.
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