Cryptovaranoides不是一个酸
Michael W Caldwell1,2, Chase D Brownstein3,4, Dalton L Meyer5
1Department of Biological Sciences, University of Alberta, Edmonton, Canada.
eLife
|December 23, 2025
概括
这项研究重新评估了化石Cryptovaranoides microlanius,挑战其在状王冠类中的位置. 这些发现强调了对精确的爬行动物进化时间表的认真化石解释.
科学领域:
- 古生物学和进化生物学.
- 脊椎动物古生物学 脊椎动物古生物学
- 系统学和植物遗传学
背景情况:
- 准确的进化时间尺度依赖于将化石数据与分子族系结合起来.
- 化石Cryptovaranoides microlanius以前被解释为冠状状动物,这意味着爬行动物的早期多样化.
- 这种解释表明,其他方法无法检测到的有意义的"幽灵血统".
研究的目的:
- 重新检查支持 †Cryptovaranoides microlanius. 的冠状状状动物亲缘关系的形态特征编码.
- 通过分析来解决经验问题,将这种化石置于状冠状类中.
- 强调严格的化石图形结构对于进化时间尺度校准的重要性.
主要方法:
- 对Cryptovaranoides microlanius的形态再分析.
- 批判性评价在以前的遗传学分析中使用的字符编码.
- 与其他三叠纪爬行动物和状动物进行比较分析.
主要成果:
- 这项研究挑战了用于支持Cryptovaranoides microlanius的冠状状体放置的形态证据.
- 在支持这种解释的分析中确定了经验问题.
- †Cryptovaranoides microlanius与现存的爬行动物之间的亲缘关系被证明是不清楚的.
结论:
- Cryptovaranoides microlanius深入状冠状的位置在重新评估中没有得到支持.
- 该研究强调了基于这种化石的现有爬行动物多样化时间表中的潜在不准确性.
- 严格的化石底层结构对于可靠的生命树校准至关重要.
关键词:
这些是Cryptovaranoides.长骨类动物形态 (archosauromorph) 是一种类动物形态.冠军集团冠军集团的冠军进化生物学是进化的生物学.爬行动物 爬行动物 爬行动物球队队友们,你们一起来看看.更多相关视频
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