气候变化领域集成服务门户(CCPortal): The trace fossil record of the Nama Group, Namibia: Exploring the terminal Ediacaran roots of the Cambrian explosion

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DOI	10.1016/j.earscirev.2020.103435
	The trace fossil record of the Nama Group, Namibia: Exploring the terminal Ediacaran roots of the Cambrian explosion
	Darroch S.A.F.; Cribb A.T.; Buatois L.A.; Germs G.J.B.; Kenchington C.G.; Smith E.F.; Mocke H.; O'Neil G.R.; Schiffbauer J.D.; Maloney K.M.; Racicot R.A.; Turk K.A.; Gibson B.M.; Almond J.; Koester B.; Boag T.H.; Tweedt S.M.; Laflamme M.
发表日期	2021
ISSN	00128252
卷号	212
英文摘要	The Ediacaran–Cambrian transition marks one of the most important geobiological revolutions in Earth History, including multiple waves of evolutionary radiation and successive episodes of apparent mass extinction. Among the proposed drivers of these events (in particular the extinction of the latest Neoproterozoic ‘Ediacara biota’) is the emergence of complex metazoans and their associated behaviors. Many metazoans are thought to have crucial geobiological impacts on both resource availability and the character of the physical environment – ‘ecosystem engineering’ – biological processes best preserved in the geological record as trace fossils. Here, we review this model using the trace fossil record of the Ediacaran to Cambrian Nama Group of southern Namibia, combining previous published accounts with the results of our own field investigations. We produce a revised ichnostratigraphy for the Nama Group that catalogues new forms, eliminates others, and brings the trace fossil record of the Nama into much closer alignment with what is known from other Ediacaran sections worldwide. We provide evidence for a link between sequence stratigraphy, oxygen, and the emergence of more complex bilaterian behaviors. Lastly, we show that observed patterns of extinction and survival over pulses of Ediacaran extinction are hard to ally with any one specific source of ecological stress associated with bioturbation, and thus a biologically-driven extinction of the Ediacara biota, if it occurred, was more likely to have been driven by some combination of these factors, rather than any single one. © 2020 The Authors
关键词	Biostratigraphy Cambrian Ecosystem engineering Ediacaran Evolution Extinction Ichnology
英文关键词	biostratigraphy; Cambrian; Ediacaran; evolution; extinction; fossil record; ichnology; paleoecology; trace fossil; Namibia; Metazoa; Namibia
语种	英语
来源期刊	Earth Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/204003
作者单位	Vanderbilt University, Nashville, TN 37235-1805, United States; University of Southern California, Los Angeles, CA 90089-0740, United States; University of Saskatchewan, Saskatoon, SK S7N 5A5, Canada; University of the Free State, Bloemfontein, South Africa; University of Cambridge, Cambridge, CB2 3EQ, United Kingdom; Memorial University of Newfoundland, St. John's, NL A1B 3X9, Canada; Johns Hopkins University, Baltimore, MD 21218, United States; Geological Survey of Namibia, Ministry of Mines and Energy, Windhoek, Namibia; North Dakota State University, Fargo, ND 58105, United States; University of Missouri, Columbia, MO 65211, United States; University of Toronto Mississauga, Mississauga, ON L5L 1C6, Canada; Senckenberg Museum of Natural History, Frankfurt, 60325, Germany; Natura Viva cc, Cape Town, 8001, South Africa; Drexel University, Philadelphia, PA 19104, United States; Stanford University, Stanford, CA 94304, United States; University of Colorado BoulderCO 80309, United States
推荐引用方式 GB/T 7714	Darroch S.A.F.,Cribb A.T.,Buatois L.A.,et al. The trace fossil record of the Nama Group, Namibia: Exploring the terminal Ediacaran roots of the Cambrian explosion[J],2021,212.
APA	Darroch S.A.F..,Cribb A.T..,Buatois L.A..,Germs G.J.B..,Kenchington C.G..,...&Laflamme M..(2021).The trace fossil record of the Nama Group, Namibia: Exploring the terminal Ediacaran roots of the Cambrian explosion.Earth Science Reviews,212.
MLA	Darroch S.A.F.,et al."The trace fossil record of the Nama Group, Namibia: Exploring the terminal Ediacaran roots of the Cambrian explosion".Earth Science Reviews 212(2021).