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Phylogenetic and Morphometric Examinations of Evolutionary Dynamics Among Early - Middle Devonian Gastropods

Phylogenetic and Morphometric Examinations of Evolutionary Dynamics Among Early - Middle Devonian Gastropods
早中泥盆世腹足动物进化动力学的系统发育和形态测量
批准号：
9903238
负责人：
Peter Wagner
金额：
$7.25万
依托单位：
Field Museum of Natural History
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1999
资助国家：
美国
项目状态：
已结题
起止时间：
1999-08-01 至 2004-07-31
来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9903238&HistoricalAwards=false
关键词：
PhylogeneticMorphometricExaminationsEvolutionaryDynamics

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英文摘要
9903238WagnerThis study will derive estimates of relationships among Early-Middle Devonian gastropod species and quantify morphologic variation among those species. The study will examine trends in two key features associated with "modernization" of gastropods: 1) the increased diversity of species bearing shell ornament and 2) the decreased diversity of nearly-flat shelled species. The study will test several hypotheses concerning thetiming and biological-level of those trends, including 1) hypotheses attributing the patterns to the diversification of jawed fishes and other predators, and 2) hypotheses attributing trends to changes in extinction/speciation dynamics vs. those attributing trends to shifts in morphologic evolution.
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Collaborative Research: Associations between climate shifts and ammonoid turnover across second-tier extinctions during the early Late Cretaceous greenhouse
  • 批准号：
    2129628
  • 项目类别：
    Standard Grant
  • 资助金额：
    $29.62万
  • 财政年份：
    2022
  • 负责人：
    Peter Wagner
  • 依托单位：
    University of Nebraska-Lincoln
Testing the Generality of Macroevolutionary Patterns with Bellerophont Molluscs
  • 批准号：
    0820143
  • 项目类别：
    Standard Grant
  • 资助金额：
    $1.44万
  • 财政年份：
    2008
  • 负责人：
    Peter Wagner
  • 依托单位：
    Smithsonian Institution
DISSERTATION RESEARCH: Testing Hypotheses of Evolutionary Trends in Brain and Body Size in the Caniformia (Mammalia, Carnivora)
  • 批准号：
    0608208
  • 项目类别：
    Standard Grant
  • 资助金额：
    $1.12万
  • 财政年份：
    2006
  • 负责人：
    Peter Wagner
  • 依托单位：
    University of Chicago
Testing the Generality of Macroevolutionary Patterns with Bellerophont Molluscs
  • 批准号：
    0207874
  • 项目类别：
    Standard Grant
  • 资助金额：
    $0.0万
  • 财政年份：
    2002
  • 负责人：
    Peter Wagner
  • 依托单位：
    Field Museum of Natural History
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