评论"超结构揭示了原始脊椎动物的喉骨"
Xi-Guang Zhang1, Brian R Pratt2
1Institute of Paleontology, Yunnan University (Chenggong Campus), Kunming 650500, China.
Science (New York, N.Y.)
|July 27, 2023
概括
坎布里亚化石的微观分析表明了潜在的污染,挑战了脊椎动物的进化说法. 需要进一步的研究来验证在云纳动物中观察到的微观结构的起源.
科学领域:
- 古生物学
- 进化生物学
- 生物化学
背景情况:
- 坎布里亚动物与脊椎动物之间的进化联系是研究的一个关键领域.
- 和其他人. 根据微观结构分析提出,云纳动物是干脊椎动物.
研究的目的:
- 重新评估坎布里亚时代云纳诺动物分枝弧中的微纤维组织的解释.
- 在化石组织中研究现代有机污染的可能性.
主要方法:
- 纳米尺度成像技术
- 对有机残留物的化学分析.
- 与现代生物组织和潜在污染物进行比较分析.
主要成果:
- 在yunnanozoan分枝弧中观察到的"微纤维"可能不是原始生物材料.
- 证据表明这些结构与现代有机污染相一致.
结论:
- 根据这种微观结构证据,关于云纳动物是干脊椎动物的说法需要重新审查.
- 污染的存在挑战了早期动物组织学和进化的先前解释.
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