最古老的完整的脊椎动物来自中国早期的纪
You-An Zhu1,2, Qiang Li3,4, Jing Lu1,2,5
1Key CAS Laboratory of Vertebrate Evolution and Human Origins, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences (CAS), Beijing, China.
Nature
|September 28, 2022
概括
新发现的中国南方化石揭示了早期的鱼的多样性和完美保存. 这些发现为脊椎动物的早期进化和多样化提供了关键的见解.
科学领域:
- 古生物学
- 进化生物学
- 脊椎动物学
背景情况:
- 分子研究表明脊椎动物起源于晚期奥尔多维纪 (大约. 450亿年前的时间.
- 之前最早的完整的鱼化石可以追溯到西鲁纪晚期 (大约. 425万年) 的时间.
- 化石记录中的一个空白掩盖了脊椎动物最早的历史.
研究的目的:
- 报道一个新的 Konservat-Lagerstätte 产生多样化的,保存良好的早期鱼.
- 提供对早期脊椎动物的详细全身形态见解.
- 揭示了前所未有的脊椎动物的多样化.
主要方法:
- 在中国南部的重庆发现和挖掘一个 Konservat-Lagerstätte.
- 对新发现的完整鱼化石进行了详细的形态分析.
- 与现有的石皮和里奇化石记录进行比较分析.
主要成果:
- 发现多样化,保存良好的鱼从早期的西卢里亚 (Telychian,大约. 436亿年前的时间.
- 描述 *Xiushanosteus mirabilis* 属和种类 一个具有过渡头骨特征的斑块皮.
- 关于"子虫"的描述 一个独特的胸部盔甲.
结论:
- 新的化石表明在早期的脊椎动物显著多样化.
- 骨神奇的桥梁和骨的头骨特征.
- 甲虫 (Shenacanthus vermiformis) 呈现出新型的甲特征, 显示出更大的形态差异.
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