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| DOI | 10.1111/gbi.12387 |
| Infaunal augurs of the Cambrian explosion: An Ediacaran trace fossil assemblage from Nevada, USA | |
| Tarhan L.G.; Myrow P.M.; Smith E.F.; Nelson L.L.; Sadler P.M. | |
| 发表日期 | 2020 |
| ISSN | 14724677 |
| 起始页码 | 486 |
| 结束页码 | 496 |
| 卷号 | 18期号:4 |
| 英文摘要 | Morphologically complex trace fossils, recording the infaunal activities of bilaterian animals, are common in Phanerozoic successions but rare in the Ediacaran fossil record. Here, we describe a trace fossil assemblage from the lower Dunfee Member of the Deep Spring Formation at Mount Dunfee (Nevada, USA), over 500 m below the Ediacaran–Cambrian boundary. Although millimetric in scale and largely not fabric-disruptive, the Dunfee assemblage includes complex and sediment-penetrative trace fossil morphologies that are characteristic of Cambrian deposits. The Dunfee assemblage records one of the oldest documented instances of sediment-penetrative infaunalization, corroborating previous molecular, ichnologic, and paleoecological data suggesting that crown-group bilaterians and bilaterian-style ecologies were present in late Ediacaran shallow marine ecosystems. Moreover, Dunfee trace fossils co-occur with classic upper Ediacaran tubular body fossils in multiple horizons, indicating that Ediacaran infauna and epifauna coexisted and likely formed stable ecosystems. © 2020 John Wiley & Sons Ltd |
| 关键词 | CambrianEdiacaranepifaunaexplosionfossil assemblagemarine ecosystemmorphologyPhanerozoictrace fossilNevadaUnited StatesAnimaliaBilateriaarticleBilateriaCambrianecologyEdiacaranexplosionfossilmarine environmentNevadanonhumansedimentspring |
| 语种 | 英语 |
| 来源机构 | Geobiology |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/133179 |
| 推荐引用方式 GB/T 7714 | Tarhan L.G.,Myrow P.M.,Smith E.F.,et al. Infaunal augurs of the Cambrian explosion: An Ediacaran trace fossil assemblage from Nevada, USA[J]. Geobiology,2020,18(4). |
| APA | Tarhan L.G.,Myrow P.M.,Smith E.F.,Nelson L.L.,&Sadler P.M..(2020).Infaunal augurs of the Cambrian explosion: An Ediacaran trace fossil assemblage from Nevada, USA.,18(4). |
| MLA | Tarhan L.G.,et al."Infaunal augurs of the Cambrian explosion: An Ediacaran trace fossil assemblage from Nevada, USA".18.4(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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