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Transitional Ediacaran-Cambrian small skeletal fossil assemblages from South China and Kazakhstan: Implications for chronostratigraphy and metazoan evolution
Yang, Ben1; Steiner, Michael2; Zhu, Maoyan (朱茂炎)3; Li, Guoxiang (李国祥)3; Liu, Jianni4; Liu, Pengju1
2016-10-01
Source PublicationPRECAMBRIAN RESEARCH
ISSN0301-9268
Volume285Pages:202-215
Abstract

The Ediacaran-Cambrian transition records distinct evolutionary changes of metazoans. The Ediacaran fossils (i.e., Ediacara-type biota and tubular fossils) are contrasting with the diverse small skeletal fossils (SSFs) from the early Cambrian. The apparent dissimilarities hindered studies deciphering their evolutionary relationships. This also led to a popular assumption that there exists a mass extinction of the Ediacara biota and cloudinids at the Precambrian-Cambrian (Pc-C) boundary. Here we report for the first time a transitional fauna which consists of typical elements of Ediacaran, i.e. cloudinids and related tubicolous organisms, together with Cambrian SSFs including protoconodonts, anabaritids and siphogonuchitids from South China and Maly Karatau (Kazakhstan). The sediments yielding the transitional fauna are characterized by siliceous rocks in both regions and were previously considered to be unfossiliferous. Their chronostratigraphic assignment in South China has been debated for years. Based on the new fossil assemblage, the siliceous strata of the Daibu Member (Northeast Yunnan, South China) and the basal Kuanchuanpu Formation (South Shaanxi, South China) can be assigned to the earliest Cambrian SSF biozone (Anabarites trisulcatus-Protohertzina anabarica Assemblage Zone) and thus can be considered of early Cambrian in age. A new subzone of the earliest SSF zone in eastern Yunnan (South China) is proposed herein defined as Ganloudina symmetrica-Rugatotheca typica Interval Subzone. The new fauna demonstrates that the cloudinids, originally confined to the late Ediacaran, persisted into the Cambrian Fortunian, and no major extinction event occurred at the Pc-C transition. (C) 2016 Elsevier B.V. All rights reserved.

KeywordEdiacaran Early Cambrian Small Skeletal Fossils Cloudina South China Maly Karatau
DOI10.1016/j.precamres.2016.09.016
Language英语
WOS KeywordSmall Shelly Fossils ; Yangtze Platform ; Lesser Himalaya ; Biostratigraphic Correlation ; Gaojiashan Lagerstatte ; Isotope Stratigraphy ; Boundary Interval ; Cloudina ; Carbon ; Microfossils
Funding ProjectNational Natural Science Foundation of China[41502020] ; National Natural Science Foundation of China[41572016] ; National Natural Science Foundation of China[41372021] ; Ministry of Science and Technology of China
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000386404500013
Funding OrganizationNational Natural Science Foundation of China ; Ministry of Science and Technology of China
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/12350
Collection中国科学院南京地质古生物研究所
其他
Corresponding AuthorYang, Ben
Affiliation1.Chinese Acad Geol Sci, Inst Geol, Baiwanzhuang St 26, Beijing 100037, Peoples R China
2.Free Univ Berlin, Dept Earth Sci, Malteserstr 74-100,Haus D, D-12249 Berlin, Germany
3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China
4.Northwest Univ, Early Life Inst, Taibai Rd 229, Xian 710069, Peoples R China
Recommended Citation
GB/T 7714
Yang, Ben,Steiner, Michael,Zhu, Maoyan ,et al. Transitional Ediacaran-Cambrian small skeletal fossil assemblages from South China and Kazakhstan: Implications for chronostratigraphy and metazoan evolution[J]. PRECAMBRIAN RESEARCH,2016,285:202-215.
APA Yang, Ben,Steiner, Michael,Zhu, Maoyan ,Li, Guoxiang ,Liu, Jianni,&Liu, Pengju.(2016).Transitional Ediacaran-Cambrian small skeletal fossil assemblages from South China and Kazakhstan: Implications for chronostratigraphy and metazoan evolution.PRECAMBRIAN RESEARCH,285,202-215.
MLA Yang, Ben,et al."Transitional Ediacaran-Cambrian small skeletal fossil assemblages from South China and Kazakhstan: Implications for chronostratigraphy and metazoan evolution".PRECAMBRIAN RESEARCH 285(2016):202-215.
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