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Paleobiology of High Latitude Decapod Crustacean Assemblages

高纬度十足目甲壳类动物组合的古生物学

基本信息

批准号：
9217538
负责人：
Rodney Feldmann
金额：
$ 4.14万
依托单位：
Kent State University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1993
资助国家：
美国
起止时间：
1993-02-15 至 1995-01-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9217538&HistoricalAwards=false
关键词：
Paleobiology Latitude Decapod Crustacean Assemblages

项目摘要

This award supports an investigation of Cretaceous and Tertiary decapod crustaceans (crabs and lobsters) from southern South America and a comparison of these fossils to similar faunas from Seymour Island, Antarctica. In late Cretaceous to early Cenozoic time, South America, Australia, New Zealand, and Antarctica formed a contiguous landmass in the southern Circum-Pacific region and so dispersal of faunas was presumably unimpeded. Work in these regions so far suggests that the southern high latitude region played an important role in the evolution and dispersal of new species. However, details of evolutionary centers and dispersal patterns remain tentative, in part because of insufficient field studies in the Antarctic Peninsula and southern South America. This work will alleviate part of the geographical gap in knowledge by collecting and describing decapod crustaceans from known Cretaceous-Tertiary stratigraphic sections in southern Chile and Argentina. Comparison of decapods from southern South America with those known from Australia, New Zealand, and the Antarctic Peninsula is an essential part of a paleoecological model of the entire southern hemisphere. In addition, this work will help to define the paleogeographic context for the unique Cretaceous-Tertiary fossils assemblages that have recently been described from Seymour Island, Antarctica.

该奖项支持对白垩纪和第三纪的研究产于南方的十足类甲壳动物（螃蟹和龙虾）这些化石与美国的类似动物群的比较，西摩岛，南极洲晚白垩世-早新生代时间，南美洲，澳大利亚，新西兰和南极洲在南环太平洋形成了一片相连的大陆因此，动物群的扩散大概是畅通无阻的。工作表明南半球高纬度地区区域在进化和扩散中发挥了重要作用，新物种然而，进化中心的细节和扩散模式仍然是暂时的，部分原因是在南极半岛的实地研究不足，南美洲南部。这项工作将缓解部分通过收集和描述地理知识差距来自已知第三纪地层的十足类甲壳动物智利南部和阿根廷。十足类的比较来自南美洲南部与那些已知的来自澳大利亚，新新西兰和南极半岛是一个重要的组成部分，整个南半球的古生态模式在此外，这项工作将有助于确定古地理独特的古生物-第三纪化石组合最近在西摩岛被描述，南极洲