Biostratigraphic and macroevolutionary study of Antartic Neogene rediolarian faunas

南极新近纪放射虫是用来确定南大洋深海沉积物年代的两个主要微化石类群之一，也是一个非常完整和丰富的物种水平进化变化的化石记录，以响应急剧变化的远洋环境。尽管在过去的几十年里，物种分类学有了很大的进步，并恢复了许多富含放射虫的剖面，但这些化石在生物地层学和进化研究中的潜力还不充分，主要是由于分类知识的不完整使用和分类群发生的不完整记录。我建议在已经完成的分类概念审查和标准化的基础上完成一项新的研究，目前正在从几个南极剖面收集新的、详细的、（几乎）完整的动物群数据，并（在这个提议的项目第三年）使用现代生物地层学和宏观进化工具（例如CONOP和PBDB工具包）对这些数据进行分析。这项研究将产生一种新的、分辨率更高的放射虫地层学，用于确定南极深海剖面的年代，并详细记录这种动物群的进化和对新近纪气候变化的反应。完整的发生数据集将在项目结束时公开供社区研究，而修订后的分类，包括新的分类出版物，正在被纳入公共网站，并支持IODP微化石数字分类目录的开发（STP建议0601-09和共识0603-10；IODP项目合同为TNL开发，2008-2010，以及通过IODP的古协调小组的其他努力）。

Antarctic Neogene radiolarians are one of the two main microfossil groups used to date Southern Ocean deep sea sediments and are also an extraordinarily complete and rich fossil record of species level evolutionary change in response to dramatically changing pelagic environments. Despite major improvements in species taxonomy and the recovery of numerous radiolarian rich sections in the last decades, the potential of these fossils for biostratigraphy and evolution research is underdeveloped, primarily due to incomplete use of taxonomic knowledge and incomplete recording of taxa occurrences. I propose to finish a new study, based on a now completed review and standardization of taxonomic concepts, currently being collected new, detailed, (nearly) full fauna data from several Antarctic sections, and (in this proposed year 3 of the project) analysis of this data using modern biostratigraphic and macroevolutionary tools (e.g. CONOP and the PBDB toolkit). The study will yield a new, much higher resolution radiolarian stratigraphy for dating Antarctic deep-sea sections, and a detailed documentation of this fauna’s evolution and response to climate change over the Neogene. The full occurrences data set will be made openly available for community study at the end of the project, while the revised taxonomy, including new taxonomic publications, is being incorporated into public websites and is supporting the development of digital taxonomic catalogs of microfossils for IODP (STP Recommendation 0601-09 and Consensus 0603-10; IODP project contracts for TNL development, 2008-2010 and other efforts via IODP's Paleo Coordination Group).