globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2016.07.003
论文题名:
A mixed Ediacaran-metazoan assemblage from the Zaris Sub-basin, Namibia
作者: Darroch S.A.F.; Boag T.H.; Racicot R.A.; Tweedt S.; Mason S.J.; Erwin D.H.; Laflamme M.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2016
卷: 459
起始页码: 198
结束页码: 208
语种: 英语
英文关键词: Aspidella ; Cambrian ; Conichnus ; Ecosystem engineering ; Ediacaran ; Metazoans ; Shaanxilithes ; Trace fossil
英文摘要: It has been proposed that the terminal Neoproterozoic Ediacara biota were driven to extinction by the evolution of metazoan groups capable of engineering their environments (the ‘biotic replacement’ model). However, evidence for an overlapping ecological association between metazoans and soft-bodied Ediacaran organisms is limited. Here, we describe new fossil localities from southern Namibia that preserve soft-bodied Ediacara biota, enigmatic tubular organisms thought to represent metazoans, and vertically-oriented metazoan trace fossils. Although the precise identity of the tracemakers remains elusive, the structures bear several striking similarities with the Cambrian-Recent ichnogenus Conichnus. These new data support inference of stratigraphic and ecological overlap between two very different eukaryotic clades, and indicate the existence of unusual ecosystems comprising both Ediacara biota and metazoans immediately prior to the Cambrian explosion. © 2016 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68300
Appears in Collections:过去全球变化的重建

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作者单位: Department of Earth and Environmental Sciences, Vanderbilt University, 2301 Vanderbilt Place, Nashville, TN, United States; Smithsonian Institution, PO Box 37012, MRC 121, Washington, DC, United States; Department of Geological Sciences, Stanford University, 450 Serra Mall, Building 320, Room 118, Stanford, CA, United States; The Dinosaur Institute, Natural History Museum of Los Angeles County, 900 Exposition Blv., Los Angeles, CA, United States; Department of Chemical and Physical Sciences, University of Toronto Mississauga, 3356 Mississauga Road NorthOntario, Canada

Recommended Citation:
Darroch S.A.F.,Boag T.H.,Racicot R.A.,et al. A mixed Ediacaran-metazoan assemblage from the Zaris Sub-basin, Namibia[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2016-01-01,459
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