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Paleontologic and Paleoecologic Record of the Cambrian Radiation Event: Stratigraphic Paleontology of Central Nevada

寒武纪辐射事件的古生物和古生态记录：内华达州中部的地层古生物学

基本信息

批准号：
9117569
负责人：
Philip Signor
金额：
$ 7.75万
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：
1992
资助国家：
美国
起止时间：
1992-01-15 至 1994-12-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9117569&HistoricalAwards=false
关键词：
Paleontologic Paleoecologic Record Cambrian Radiation

项目摘要

This project involves detailed taxonomic, biostratigraphic, and paleoenvironmental analyses of previously unstudied Lower Cambrian fossil faunas and stratigraphic units in Central Nevada (Shoshone, Toiyabe, and Toquima Ranges). This research will provide the following: 1) detailed descriptions of the Lower Cambrian stratigraphic units; 2) descriptions of the local Lower Cambrian faunas; 3) paleoecological analyses of Lower Cambrian facies; and 4) biostratigraphic correlations with other Lower Cambrian units in western North America. This information will then be applied to more general problems of the Early Cambrian including: 1) the temporal pattern of diversification during the Cambrian radiation event; 2) tests of the Grand Cycle hypothesis of sediment accumulation in the Lower Cambrian of western North America; 3) biogeographic relationships of Early Cambrian metazoan faunas; 4) reconstruction of the phylogenetic relationships of the early metazoan taxa; and 5) documentation of the influence of changing paleoecologies on the actual nature of the radiation event (as well as its apparent record). In short, the goal of this project is to produce the detailed stratigraphic and paleontologic data critical to understanding Early Cambrian metazoan evolution and the processes responsible for the Cambrian radiation event.

该项目涉及详细的分类，生物地层，和古环境分析以前未研究的低中内华达州寒武纪化石动物群和地层单位（肖松尼、托伊亚贝和托奎马山脉）。这项研究将提供以下内容：1）详细描述了下寒武纪地层单位; 2）当地下伏地层描述寒武纪动物群; 3）下寒武统古生态分析 4）与其他下统的生物地层对比北美洲西部的寒武纪单位。这些信息将然后应用于更普遍的早寒武世问题包括：1）多样化的时间模式，寒武纪辐射事件; 2）大旋回假说的检验北西部下寒武统沉积物堆积早寒武世后生动物的地理关系动物群; 4）重建系统发育关系的早期后生动物类群;和5）文件的影响，变化的古生态对辐射事件的实际性质 (as其明显的记录）。简而言之，该项目是为了产生详细的地层和古生物学了解早寒武世后生动物进化的关键数据以及寒武纪辐射事件的过程。