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将化石与族系结合起来,揭示了解释全球鱼生物多样性的起源和宏观进化过程
Mario Coiro1,2, Rémi Allio3, Nathan Mazet4
1Department of Palaeontology, University of Vienna, 1090, Vienna, Austria.
The New phytologist
|June 11, 2023
概括
虫起源于劳拉西亚的石灰岩时期,并在罗纪传播到贡德瓦纳. 化石揭示了它们的古代全球分布和度变化,解释了它们今天的遗迹地位.
科学领域:
- 古生物学的古生物学
- 进化生物学 进化生物学
- 生物地理学 生物地理学
背景情况:
- 旋是一种遗留群体,其起源和地理范围的演变不明.
- 了解宏观进化模式需要将化石数据整合到族系中.
- 目前,鱼只限于低度地区,尽管历史上分布更广.
研究的目的:
- 调查全球生物多样性模式的起源和历史生物地理.
- 结合分子和化石数据进行全面的遗传学分析.
- 了解推动这种遗物群体分布的进化过程.
主要方法:
- 贝叶斯总证据约会分析整合了分子和形态数据 (现存和化石).
- 基于时间分层的过程模型来追踪历史生物地理.
- 祖先地区的重建,以确定地理起源.
主要成果:
- 虫起源于劳拉西亚大陆的石灰岩时期.
- 他们在罗纪期间扩张到贡德瓦纳,利用南极洲和格陵兰岛作为生物地理十字路口.
- 变种主要是通过替代性发生的,罗纪的度范围扩大,随后在新生代收缩到亚热带度.
结论:
- 将化石整合到族系中对于准确的祖先面积估计和理解进化过程至关重要.
- 维卡里安斯在整个历史中在鱼的物种化中发挥了重要作用.
- 高度的除可能有助于新生代鱼分布的收缩.
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