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Updated: Jun 7, 2025
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一个新的大型单斯特揭示了进化过渡到pterodactyloid pterosaurs 的过程
David William Elliott Hone1, Adam Fitch2, Stefan Selzer3
1School of Biological and Behavioural Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, UK.
Current biology : CB
|November 19, 2024
概括
一种新的罗纪龙,Skiphosoura bavarica,弥合了飞行爬行动物历史中的一个关键进化差距. 这一发现澄清了从早期的类动物过渡到衍生的类动物,揭示了解剖学和陆地能力的逐渐变化.
科学领域:
- 古生物学的古生物学
- 进化生物学 进化生物学
- 脊椎动物古生物学 脊椎动物古生物学
背景情况:
- 长期以来,一个显著的形态差距阻碍了对早期形式和衍生型类动物之间的类动物进化理解.
- 最近发现的中间形式具有类似体的头和子,但早期的身体,但与早期和更衍生的类动物仍然存在差距.
研究的目的:
- 为了描述一个新的大罗纪龙,Skiphosoura bavarica,弥合中间龙和pterodactyloids之间的进化差距.
- 建立一个新的分类学,澄清了 ptosaur 关键特征的进化进展.
主要方法:
- 一个新的化石分类的描述,Skiphosoura bavarica,保存在三个维度.
- 遗传学分析用于重建进化关系并追踪性格进化.
主要成果:
- 描述了Skiphosoura bavarica,一个新的大罗纪龙,有助于填补中间龙和pterodactyloids之间的差距.
- 遗传学分析揭示了特征的进展:增加头部和子的长度,修改第五个脚以支持后翼膜,减少尾巴和增强地面能力.
- 在这个过渡序列中,Rhamphorhynchines和Ctenochasmatids分别被确定为最早和最晚的组.
结论:
- 对Skiphosoura bavarica的发现和新的原型学揭示了从早期的类动物到类动物的进化途径.
- 这项研究澄清了过渡,突出了逐渐的解剖变化和衍生类动物陆地能力的演变.
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