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A deep root for the Cambrian explosion: Implications of new bio- and chemostratigraphy from the Siberian Platform
Maoyan Zhu (朱茂炎); Zhuravlev, AY (Zhuravlev, A. Yu.); Zhao, F (赵方臣); Wood, RA (Wood, R. A.); Sukhov, SS (Sukhov, S. S.)
2017-05-01
Source PublicationGeology
ISSN0091-7613
Volume45Issue:5Pages:459-462
Abstract

Much uncertainty remains as to the temporal relationship between the Ediacaran and Cambrian biotas, yet this is critical to our understanding of the rise of metazoans. Here we present new high-resolution carbon isotope chemostratigraphy and biostratigraphy for a terminal Ediacaran to Cambrian succession on the eastern Siberian Platform, Russia, which shows the presence of a succession of diverse fossil assemblages before the start of the basal Cambrian negative carbon isotope excursion (BACE). Soft-bodied Ediacaran biota (Beltanelliformis) occur before the start of the late Ediacaran positive carbon isotope plateau (EPIP), a mixed Ediacaran and Cambrian skeletal biota (Cloudina, Anabarites, Cambrotubulus) appears within the EPIP, and diverse Cambrian-type small shelly fossils including Protohertzina and other protocondonts, halkieriids, chancelloriids, hyoliths, hyolithelminthes, and the burrowing trace fossil Diplocraterion appear at the beginning of the BACE. These integrated data show that taxa attributed to so-called Ediacaran and earliest Cambrian skeletal biotas in fact overlap without notable biotic turnover, and thus refute the presence of a large isotope excursion coincident with mass extinction of all Ediacaran biota. We propose a new biozone, the Cloudina-Namacalathus-Sinotubulites Assemblage Zone, to precede the known small shelly fossil (SSF) zones. These observations raise doubts as to whether there is any true separation between the Ediacaran and Cambrian skeletal biotas, and suggest that there is a deep root for the Cambrian explosion of metazoans.

DOI10.1130/G38865.1
Indexed BySCI
Language英语
WOS KeywordFossil Assemblages ; South China ; Ediacaran ; Chronostratigraphy ; Namacalathus ; Cloudina ; Boundary ; Animals ; History ; Canada
WOS Research AreaGeology
WOS SubjectGeology
WOS IDWOS:000404101300023
PublisherGEOLOGICAL SOC AMER, INC
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/14067
Collection中国科学院南京地质古生物研究所
Corresponding AuthorMaoyan Zhu (朱茂炎)
Affiliation1.Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China
3.Lomonosov Moscow State Univ, Fac Biol, Dept Biol Evolut, Leninskie Gory 1 12, Moscow 119234, Russia
4.Univ Edinburgh, Sch Geosci, James Hutton Rd, Edinburgh EH9 3FE, Midlothian, Scotland
5.Siberian Sci Res Inst Geol Geophys & Mineral Reso, Krasny Prospekt 67, Novosibisrk 630091, Russia
Recommended Citation
GB/T 7714
Maoyan Zhu ,Zhuravlev, AY ,Zhao, F ,et al. A deep root for the Cambrian explosion: Implications of new bio- and chemostratigraphy from the Siberian Platform[J]. Geology,2017,45(5):459-462.
APA Maoyan Zhu ,Zhuravlev, AY ,Zhao, F ,Wood, RA ,&Sukhov, SS .(2017).A deep root for the Cambrian explosion: Implications of new bio- and chemostratigraphy from the Siberian Platform.Geology,45(5),459-462.
MLA Maoyan Zhu ,et al."A deep root for the Cambrian explosion: Implications of new bio- and chemostratigraphy from the Siberian Platform".Geology 45.5(2017):459-462.
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