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Research Article| June 17, 2024 Early Publication
Aihua Yang;
Aihua Yang
1
School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China
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Bo Chen;
Bo Chen
2
State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences (CAS), Nanjing 210008, China
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Zhixin Sun;
Zhixin Sun
2
State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences (CAS), Nanjing 210008, China
3
College of Earth and Planetary Sciences, University of CAS, Beijing 100049, China
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Rosalie Tostevin;
Rosalie Tostevin
4
Department of Geological Sciences, University of Cape Town, Cape Town 7701, South Africa
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Tianchen He;
Tianchen He
5
College of Oceanography, Hohai University, Nanjing 210024, China
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Xi Chen;
Xi Chen
1
School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China
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Jitao Chen;
Jitao Chen
2
State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences (CAS), Nanjing 210008, China
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Miao Lu;
Miao Lu
2
State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences (CAS), Nanjing 210008, China
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Chunlin Hu;
Chunlin Hu
2
State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences (CAS), Nanjing 210008, China
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Shengxian Du;
Shengxian Du
6
Shandong Institute of Geological Sciences, Jinan 250013, China
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Jun Chen;
Jun Chen
6
Shandong Institute of Geological Sciences, Jinan 250013, China
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Wenjun Jiao;
Wenjun Jiao
7
Key Laboratory of Marine Geology and Environment, Institute of Oceanology, CAS, Qingdao 266071, China
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Maoyan Zhu
Maoyan Zhu
2
State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences (CAS), Nanjing 210008, China
3
College of Earth and Planetary Sciences, University of CAS, Beijing 100049, China
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Author and Article Information
Aihua Yang
1
School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China
Bo Chen
2
State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences (CAS), Nanjing 210008, China
Zhixin Sun
2
State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences (CAS), Nanjing 210008, China
3
College of Earth and Planetary Sciences, University of CAS, Beijing 100049, China
Rosalie Tostevin
4
Department of Geological Sciences, University of Cape Town, Cape Town 7701, South Africa
Tianchen He
5
College of Oceanography, Hohai University, Nanjing 210024, China
Xi Chen
1
School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China
Jitao Chen
2
State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences (CAS), Nanjing 210008, China
Miao Lu
2
State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences (CAS), Nanjing 210008, China
Chunlin Hu
2
State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences (CAS), Nanjing 210008, China
Shengxian Du
6
Shandong Institute of Geological Sciences, Jinan 250013, China
Jun Chen
6
Shandong Institute of Geological Sciences, Jinan 250013, China
Wenjun Jiao
7
Key Laboratory of Marine Geology and Environment, Institute of Oceanology, CAS, Qingdao 266071, China
Maoyan Zhu
2
State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences (CAS), Nanjing 210008, China
3
College of Earth and Planetary Sciences, University of CAS, Beijing 100049, China
Publisher: Geological Society of America
Received: 03 Mar 2024
Revision Received: 15 May 2024
Accepted: 27 May 2024
First Online: 17 Jun 2024
Online ISSN: 1943-2682
Print ISSN: 0091-7613
© 2024 Geological Society of America
Geology (2024)
Article history
Received:
03 Mar 2024
Revision Received:
15 May 2024
Accepted:
27 May 2024
First Online:
17 Jun 2024
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Citation
Aihua Yang, Bo Chen, Zhixin Sun, Rosalie Tostevin, Tianchen He, Xi Chen, Jitao Chen, Miao Lu, Chunlin Hu, Shengxian Du, Jun Chen, Wenjun Jiao, Maoyan Zhu; Shallow ocean deoxygenation drove trilobite turnover during the late Cambrian SPICE event. Geology 2024; doi: https://doi.org/10.1130/G52200.1
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The spread of marine anoxia is believed to have played a key role in the development of the SPICE (Steptoean Positive Carbon Isotope Excursion) event and the end-Marjuman extinction in the late Cambrian (∼497.5 m.y. ago), but their cause-and-effect relationship is poorly constrained. Here we present an integrated analysis of carbonate δ13C, cerium anomalies (Ce/Ce*), and genus-level diversity data of trilobites from the North China Platform. Our results show tightly coupled changes between the SPICE, an increase in Ce/Ce*, and a trilobite turnover event, which we interpret as indicating enhanced productivity and organic remineralization, leading to the development of low-oxygen conditions in shallow-water settings. This study therefore establishes a direct link between local ecological stress and trilobite turnover during the global SPICE event. Furthermore, the presence of low-oxygen rather than fully anoxic conditions during the peak of the SPICE event could explain the nature of the end-Marjuman crisis, which was characterized by the replacement of shallow-water fauna by deeper-water counterparts that were potentially more tolerant of hypoxia.
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