Paleontologic and Paleoecologic Record of the Cambrian Radiation Event in the White-Invo Region, Eastern Californiaand Western Nevada

加利福尼亚州东部和内华达州西部怀特-因沃地区寒武纪辐射事件的古生物和古生态记录

• 批准号: 8804798
• 负责人: Philip Signor
• 金额: $ 7万
• 依托单位: University of California-Davis
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-08-01 至 1991-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8804798&HistoricalAwards=false
• 关键词: Paleontologic; Paleoecologic; Record; Cambrian; Radiation

This work is a renewal of support for NSf-sponsored research on the Lower Cambrian of the southwestern Great Basin. Previous research examined the taxonomy and paleoecology of faunas in the "pre-trilobite" and Fallotaspis and Nevadella Zones in the White- Inyo region of eastern California and western Nevada. The focus of future research is upon the expansion of this work to include the final portion of the Lower Cambrian, the Bonnia-Olenellus Zone. The research will involve detailed taxonomic, biostratigraphic and paleoenvironmental analyses of newly- discovered and previously known fossils from this stratigraphic interval. In conjunction with our previous studies, this research will provide: 1)new information about the temporal pattern of diversification during the Cambrian radiation event 2) improved and refined regional and interregional biostratigraphic correlations 3) data to aid in reconstruction of the phylogenetic relationships of the early metazoan taxa; and 4) documentation of the influence of changing paleoecologies on the actual nature of the radiation event as well as its apparent record. All of this information is critical to constraining the many hypotheses detailing the processes that might have controlled the diversification of Metazoa.

这项工作是对国家科学基金会赞助的研究的支持， 大盆地西南部的下寒武纪。 先前 研究检查了该地区动物群的分类学和古生态学， 白色的“前三叶虫”和Fallotaspis和Nevadella带- 美国加州东部和内华达州西部的因约地区。 重点 未来研究的重点是扩大这项工作， 下寒武统的最后一部分，Bonnia-Olenellus 区 这项研究将涉及详细的分类学， 生物地层和古环境分析 发现和以前已知的化石从这个地层 interval. 结合我们以前的研究，这项研究 将提供：1）关于时间模式的新信息 寒武纪辐射事件期间的多样化2）改善 以及区域和区域间生物地层学的改进 相关性3）数据，以帮助重建的系统发育 早期后生动物分类群的关系;以及4）记录 变化的古生态对实际性质的影响， 辐射事件及其明显的记录。 这一切 信息对于约束许多假设至关重要 详细描述了可能控制 后生动物的多样化。