Estimating spatial variation in origination and extinction in deep time: a case study using the Permian-Triassic marine invertebrate fossil record
Estimating spatial variation in origination and extinction in deep time: a case study using the Permian-Triassic marine invertebrate fossil record
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DOI：
10.1017/pab.2023.1
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发表时间：
2023-02-10
期刊：
影响因子：
2.7
通讯作者：
Dunhill, Alexander M.
中科院分区：
文献类型：
--
作者：
Allen, Bethany J.;Clapham, Matthew E.;Dunhill, Alexander M.
理解起源和灭绝的空间变异有助于揭示宏观进化模式的机制。虽然已经开发出了从化石记录中估计全球起源和灭绝率的方法，但还没有将这些方法应用于有限空间区域的框架。在这里，我们测试的三个指标的有效性，区域分析，使用模拟化石出现。然后将这些指标应用于二叠纪和三叠纪的海洋无脊椎动物记录，以研究不同纬度的灭绝和起源率的变化。灭绝和起源率在这些时间间隔内在整个纬度范围内基本一致，包括在Capitanian和Permian-Triassic大规模灭绝期间。这种变化的幅度很小，加上其归因于抽样偏差的可能性，警告不要将任何观察到的差异与对比的进化动态联系起来。我们的研究结果表明，起源和灭绝的水平更易变的分支比跨纬度。
Understanding spatial variation in origination and extinction can help to unravel the mechanisms underlying macroevolutionary patterns. Although methods have been developed for estimating global origination and extinction rates from the fossil record, no framework exists for applying these methods to restricted spatial regions. Here, we test the efficacy of three metrics for regional analysis, using simulated fossil occurrences. These metrics are then applied to the marine invertebrate record of the Permian and Triassic to examine variation in extinction and origination rates across latitudes. Extinction and origination rates were generally uniform across latitudes for these time intervals, including during the Capitanian and Permian-Triassic mass extinctions. The small magnitude of this variation, combined with the possibility of its attribution to sampling bias, cautions against linking any observed differences to contrasting evolutionary dynamics. Our results indicate that origination and extinction levels were more variable across clades than across latitudes.