早期-中期珀米亚时期的地中海高戈诺普斯动物表明,类动物的赤道起源
Rafel Matamales-Andreu1,2, Christian F Kammerer3, Kenneth D Angielczyk4
1MUCBO | Museu Balear de Ciències Naturals, FJBS-MBCN, ctra. Palma-Port de Sóller km 30.5, 07100, Sóller, Mallorca, Illes Balears, Spain. rmatamales@mucbo.org.
Nature communications
|December 17, 2024
概括
已知最古老的类化石是来自马略卡的类,这表明类起源于热带地区. 这一发现为类动物在波斯纪灭绝事件之后的进化提供了新的时间表.
科学领域:
- 古生物学的古生物学
- 进化生物学 进化生物学
- 在平流体学上,平流体学是平流体学.
背景情况:
- 类动物是占主导地位的波斯纪脊椎动物,进化为哺乳动物.
- 治疗虫的起源和早期多样化仍然不太清楚.
- 之前的研究缺乏从关键时间段的明确的早期松化石证据.
研究的目的:
- 为了确定Therapsida的起源时间和地点.
- 为了描述已知的最古老的确切的松化石.
- 为了建立一个定量时间表用于虫早期进化.
主要方法:
- 来自中下波斯玛略卡的部分戈戈诺普斯动物骨的描述.
- 放松时钟模型的应用用于遗传学约会.
- 化石沉积环境的古环境重建.
主要成果:
- 发现已知最古老的戈戈诺普斯动物,可能是最古老的类动物,来自马略卡的珀米亚.
- 定量时间表表明,在奥尔森灭绝后的1000万年内,虫群的快速进化辐射发生.
- 确定赤道潘盖亚的一个古老的夏季湿生物群作为治疗虫的可能起源.
结论:
- 泰拉普西达可能起源于潘盖亚的热带地区.
- 治疗虫的早期多样化是快速的,发生在特定的古生物学环境中.
- 这一发现显著提升了我们对早期虫进化和生物地理学的理解.
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