Patterns and Rates of Evolution in Two Lineages of Lower Devonian Conodonts

下泥盆统牙形刺两个谱系的进化模式和速率

• 批准号: 9814354
• 负责人: Peter Roopnarine
• 金额: $ 11.7万
• 依托单位: California Academy of Sciences
• 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
• 起止时间: 1999-04-01 至 2002-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9814354&HistoricalAwards=false
• 关键词: Patterns; Rates; Evolution; Two; Lineages

9814354Roopnarine and MurphyDetailed stratigraphic sampling, comprehensive morphometric analysis, and fractal-based analysis of non-periodic time series will be combined to examine in detail the patterns and rates of microevolution of two Lower Devonian conodont genera, Icriodus and Ozarkodina, in Western North America. A new method of analysis based on random walks will be applied to character stratophenetic series of individual taxa to define different modes of microevolution. The relationship between evolutionary rate and mode will be examined by relating distributions of evolutionary rates to various modes. Finally, a model of character evolution will be constructed by comparing patterns of within-sample covariation to temporal patterns. Techniques, which maximize the quantity of information that can be derived from stratophenetic series, will enable us to eventually compile a database of microevolutionary patterns and rates for a broad range of taxa.

9814354 Roopnarine和Murphydetered地层抽样，全面的形态计量分析以及基于分形的非周期时间序列的分析，以详细检查两种下层DEVONIAN CONODONT CONODONT GENERA，ICRIODUS，ICRIODUS和Ozarkarkodina，在西部西部，在西部详细检查了两个下层底顿氏菌的微型进化速率。基于随机步行的新分析方法将应用于单个分类单元的字符层流系列系列，以定义不同的微观进化模式。进化速率和模式之间的关系将通过将进化速率与各种模式的分布相关联。最后，将通过将样本内协变量与时间模式进行比较模式来构建字符演化的模型。最大化可以从地层噬菌系列中得出的信息数量的技术将使我们最终能够为广泛的分类单元编译微进化模式和速率数据库。