Historical Biodiversity of Tropical America: A Paleobiotic Survey of Caribbean and Eastern Pacific Marine Invertebratesof the Past Ten Million Years

热带美洲的历史生物多样性：过去一千万年加勒比海和东太平洋海洋无脊椎动物的古生物调查

• 批准号: 9300905
• 负责人: Laurel Collins
• 金额: $ 33.01万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 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: 1993-07-15 至 1996-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9300905&HistoricalAwards=false
• 关键词: Historical; Biodiversity; Tropical; America; Paleobiotic

WPC 2 M B P V ` Courier 10cpi | x ? x x x , k x 6 X @ 8 ; X @ Leonard Krishtalka 2 3 ' 3 ' 3 ' 3 ' 4 D L ! 3 ' 3 ' 3 ' 3 ' 3 ' 3 ' 3 ' 3 ' 3 ' 3 ' 3 ' 3 ' X 3 ' 3 ' 3 ' 3 ' X X X 3 ' 3 ' 3 ' 3 ' " 4 D L ! (# # x \ P C X P# Collins 9300905 (# ` h p x (# This three year project will survey and database the Miocene and Pliocene marine invertebrate fossil faunas of tropical America in order to test and study hypotheses of biotic responses to the closing of the Panamanian sea corridor between the Caribbean and Pacific seaways. During the Neogene, this closure split the tropical marine realm and produced oceanic changes and biotic isolation on opposite sides of Central America. The survey, which will occur in a fine scaled stratigraphic framework, will include geographic, sedimentologic, stratigraphic, paleoecologic, and taxonomic datasets. Most of the fauna consists of bryozoans, foraminifera and molluscs, which will be subjected to faunal analyses and employed in paleoenvironmental and paleoclimatic determinations. The resultant collections will also be used in systematic and phylogenetic studies of constituent groups and in training students in paleobiology. The project has longstanding collaboration with facilities and investigators at the Smithsonian Tropical Research Institute in Panama. %%% During the Miocene and Pliocene epochs 20 million to 2 million years ago the Panamanian sea corridor between the Caribbean and the Pacific became constricted and finally closed, splitting what had been a continuous seaway into two discrete marine realms on either side of Central America. This closure produced wholesale oceanic and biotic changes, including extinctions, migrations and the development of many new marine species. The project will survey the marine fossil faunas of tropical America from this time period in order to study these change s and correlate the impacts on the marine organisms of the closing of the Panamanian seaway. The survey will include geographic, geologic and paleontologic datasets. Most of the fossil animals are bryozoans, foraminifera and molluscs, which will be subjected to faunal analyses and employed in paleoenvironmental and paleoclimatic determinations. The resultant collections will also be used to reconstruct the history of these organisms and in training students in paleobiology. The project is extremely important in charting responses in the marine realm to geological events. ***

wpc 2 m b p v` courier 10cpi | x？ x x x，k x 6 x @ 8; X @ Leonard Krishtalka 2 3'3'3'3'3'4 D L！ 3'3'3'3'3'3'3'3'3'3'3'3'3 X 3'3'3'3'3 X x x x 3'3'3'3'3'“ 4 D L！ （＃x \ p c x p＃collins 9300905（＃`h p x（＃这个三年项目将调查和数据库中新世和上新世海洋无脊椎动物无脊椎动物化石对热带地区的化石动物，以测试和研究PANAMANIAN SEARICE SEARICE SEARIEN和PANAMAN SEARICE SEARICE SEARIEN和PANAMAN SEARIEN CORHICER PARICIC SEARIEN和PANAMAIN SEARIEN CORIBEICEREN和PANAMAIN SEARIEN CORIBEIN和PAMBEAN及时的封闭过程中的封闭过程。热带海洋领域并在中美洲的相对方面产生了海洋的变化和生物隔离。古环境和古气候测定。 最终的收集还将用于组成组的系统和系统发育研究，以及培训古生物学的学生。 该项目与巴拿马史密森尼热带研究所的设施和调查人员进行了长期合作。中新世和上新世时期的2000万至200万年前，加勒比海与太平洋之间的巴拿马海走廊被限制并最终关闭，将曾经连续的海道分为中美洲任一侧的两个离散海洋领域。 这种封闭产生了批发海洋和生物变化，包括灭绝，迁移以及许多新海洋物种的发展。 该项目将从这个时期开始调查热带美洲的海洋化石动物群，以研究这些变化并将其对巴拿马海道关闭的海洋生物的影响相关联。 该调查将包括地理，地质和古生物学数据集。 大多数化石动物是bryozoans，有孔虫和软体动物，它们将经过动物性分析，并用于古环境和古气候的确定。 由此产生的收集还将用于重建这些生物的历史和培训古生物学的学生。 该项目对于在海洋领域中对地质事件的绘制响应非常重要。 ***