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Jack M Craig^1,2,3, Whitney L Fisher¹, Allan S Thomas¹

¹Institute for Genomics and Evolutionary Medicine, Temple University, Philadelphia, PA, United States.

Frontiers in bioinformatics

|December 5, 2025

概括

阿弗洛特利亚的分子时间树揭示了哺乳动物的多样化开始在白纪-古世事件之前的1200万年. 在这个灭绝事件的周围逐渐发生了五种分歧,影响了阿弗罗特里亚类的秩序.

科学领域:

* 哺乳动物进化生物学
* 分子遗传学分子遗传学
* 考古学古生物学

背景情况:

* Afrotheria 是一个哺乳动物的超级秩序,包括土猪,大象和海豚.
* 了解阿弗洛特的多样化是哺乳动物进化史的关键.
*以前的分子计时树缺乏全面的分类学覆盖.

研究的目的:

* 构建一个分类学上全面的分子时间树为Afrotheria.
* 为了研究白纪-古世 (K-Pg) 事件对阿弗洛特物种多样化的影响.
* 迄今为止,Afrotherian哺乳动物序列的分歧时间.

主要方法:

* 综合性方法,结合出版的时间树的文献审查.
* 分子族系的新年约会.
*从新的序列对齐中推断时间树.

主要成果:

* 最早的阿弗洛特里亚分歧比K-Pg事件早了1200万年.
* 在1600万年的时间里,五个顺序间的分歧逐渐发生.
* 这一时期包括大约6600万年前的K-Pg大灭绝事件.

结论:

*K-Pg事件在Afrotherian命令的多样化中发挥了作用.
* Afrotherian的多样化是一个渐进的过程,跨越了K-Pg边界.
* 这项研究为Afrotheria提供了一个强大的分子时间树.

关键词:

阿弗洛特里亚 (Afrotheria) 是一种植物.KPg KPg 是一个指令.约会约会约会约会约会进化演化演化演化演化演化演化演化人类的基因组学.

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