Survey of the Fossil Record of Neoproterozoic Eukaryotes

新元古代真核生物化石记录调查

• 批准号: 9400712
• 负责人: Andrew Knoll
• 金额: $ 17.85万
• 依托单位: Harvard University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-09-01 至 1998-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9400712&HistoricalAwards=false
• 关键词: Survey; Fossil; Record; Neoproterozoic; Eukaryotes

9400712 Knoll Processes of organic decay and fossilization impose strong filters on the paleontological record. Because extraordinarily well-preserved fossils retain biological information not commonly available in sedimentary rocks, they have played a key role in the interpretation of plant and animal evolution. They are equally important in attempts to understand Precambrian life. I propose a comprehensive systematic, taphonomic, paleoecological, and biostratigraphic study of three exceptionally well-preserved fossil assemblages that collectively shed significant new light on the early history of eukaryotic organisms: the ca.750 million year old (Ma) Multicolored Series, Greenland; the 100-1100 Ma old Ruyang Group, China; and what is among the best preserved and most diverse of all Precambrian fossil assemblages, the 600-580 Ma old Doushantuo Formation, south China. Information gathered in these studies will contribute to a new data base (DELTA System) of Proterozoic Eukaryotes that will simultaneously serve as a taxonomic key and a tool for exploring the environmental and age distribution of radiating eukaryotic taxa and characters. In a practical vein, these data will contribute to a growing biostratigraphic and paleoenvironmental framework that is proving valuable in rapidly expanding exploration for Neoproterozoic resources.

小行星9400712 有机物的腐烂和石化过程对古生物学记录施加了强有力的过滤。 由于保存非常完好的化石保留了沉积岩中不常见的生物信息，因此它们在解释植物和动物进化方面发挥了关键作用。 它们在试图理解前寒武纪生命时同样重要。 我提出了一个全面的系统，埋藏，古生态和生物地层学研究的三个异常保存完好的化石组合，共同提供了重要的新的光的早期历史的真核生物：约7.5亿年（马）多色系列，格陵兰岛，100-1100马老汝阳群，中国;中国南方前寒武纪化石组合中保存最好、种类最多的是距今600-580 Ma的陡山沱组。 在这些研究中收集的信息将有助于一个新的数据库（三角洲系统）的元古宙真核生物，将同时作为一个分类的关键和工具，探索辐射真核生物类群和字符的环境和年龄分布。 实际上，这些数据将有助于建立一个不断发展的生物地层和古环境框架，这在迅速扩大新元古代资源勘探方面证明是有价值的。