最早的爬行动物身体印象具有状皮肤
Lorenzo Marchetti1, Antoine Logghe2, Michael Buchwitz3
1Museum für Naturkunde Berlin, Leibniz-Institut für Evolutions- und Biodiversitätsforschung, Invalidenstraße 43, 10115 Berlin, Germany.
Current biology : CB
|February 13, 2026
概括
化石皮肤印记揭示了最早的证据显示,从早期的波斯河流时期的干爬行动物中出现了表皮. 这一发现揭示了爬行动物皮肤的进化及其在多样化中的作用.
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:
- 外皮是现代爬行动物中关键的整体结构,但它们的进化起源仍然不太清楚.
- 早期爬行动物皮肤结构的化石证据,特别是软的表皮,由于保存不佳,很少.
- 痕迹化石提供了关于古代整体结构的形态和演变的宝贵见解.
研究的目的:
- 为了呈现最早的确定的化石证据表皮在茎爬行动物.
- 描述一种新的休息痕迹化石,保存了特殊细节的状皮肤印记.
- 研究表皮在干爬行动物的多样化中的早期进化和重要性.
主要方法:
- 对一个新描述的休息痕迹化石 (Cabarzichnus pulchrus) 的分析,该化石来自德国早期的阿塞利安金罗特形成.
- 身体印记与Varanopus microdactylus足迹的关联,以识别轨道制造者.
- 化石尺度印象的比较形态分析与现存和灭绝的种类.
主要成果:
- 发现了最古老,最完整的古老时代干爬行动物的身体印记,显示出明显的表皮尺度保存.
- 与Varanopus microdactylus的足迹有明确的联系,识别了一个博洛的轨道制造者.
- 在尾部和通风区域发现独特的尺度形态,类似于现代状动物.
结论:
- 这一发现代表了树干爬行动物上表皮的最早出现,可以追溯到早期的阿塞利亚 (早期的珀米亚).
- 在晚期石炭时期的羊动物中表皮和皮肤的共存以及在阿塞利亚干爬行动物中的差异化得到了支持.
- 皮肤的进化可能先于重大环境变化,并促进了干爬行动物的多样化.
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