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乌的起源和演变 (Soricidae,哺乳动物)
Haobo Yuan1,2, Ephriam D Dickson3, Quentin Martinez4
1Department of Zoology, University of Cambridge CB2 3EJ, UK.
Proceedings. Biological sciences
|December 17, 2024
概括
这项研究使用化石和分子数据重建了的进化历史,揭示了Myosoricini的新多样性和独特的骨特征. 这些发现表明,Soricidae起源于北美古世或早期欧世.
科学领域:
- 古生物学的古生物学
- 进化生物学 进化生物学
- 哺乳动物学 哺乳动物学
背景情况:
- 由于化石记录碎片化和解剖学文献不完整,人们对鱼 (Soricidae) 的进化历史知之甚少.
- 现有的知识差距阻碍了对的多样化和哺乳动物之间的关系的全面理解.
研究的目的:
- 通过整合分子,形态和化石数据来重建的遗传历史.
- 研究索里科家族及其化石亲属中的进化关系和解剖学新奇事物.
- 为了确定Soricidae的地理起源和时间多样化.
主要方法:
- 遗传学分析包括现存和化石的分子,形态和时间数据.
- 详细解剖检查已知最古老的完整化石,Domnina.
- 对骨进行比较分析,重点关注新的解剖特征和遗传学位置.
主要成果:
- 这项研究发现了以前未知的多样性,包括总和皇冠组虫,包括Myosoricini的新,强壮的芝麻状骨头.
- 解剖学比较揭示了"红牙"和"白牙"的独特特征,表明牙色素的共同祖先.
- *Domnina*和其他异种鱼类在遗传学上被放置在Soricidae王冠之外,具有独特的特征,如开放的口鼻道.
- 最古老的,支持良好的总群索里科因是北美的,这表明亚洲以外的潜在起源.
- 索里科类动物很可能起源于古世或早期的欧世,而 *Crocidura * 属在米奥世中多样化.
结论:
- 这种全面的遗传学分析澄清了的进化历史,揭示了显著的多样性和解剖适应性.
- 这些发现表明早期的类动物起源于北美,并为类动物的多样化提供了精细的时间表.
- 这项研究强调了化石证据在理解哺乳动物进化和解决家族遗传不确定性方面的重要性.
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