坎布里亚早期生物矿物化的柱状建筑的演化和多样性 酸贝状足动物
Zhiliang Zhang1,2, Zhifei Zhang3, Lars Holmer4
1State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing, China.
eLife
|April 10, 2024
概括
早期的手足类动物发展出复杂的,生物控制的,具有独特柱状结构的酸外. 这项研究揭示了这些微观柱的等级结构和进化意义,这些微观柱在早期的舌形臂足动物中具有重要意义.
科学领域:
- 古生物学的古生物学
- 生物矿物化 生物矿物化
- 进化生物学 进化生物学
背景情况:
- 甲动物生物矿物化产生硬骨是一种可以追溯到坎布里亚时期的进化创新.
- 语言型手足类动物是关键的无脊椎动物,它们利用酸来构建.
- 臂足动物中的微观有机酸圆柱体是不同的,但在祖先形式中不太了解.
研究的目的:
- 研究早期手足足动物祖先微观柱状外结构的复杂性,多样性和生物矿物化过程.
- 描述刚刚识别的布类物种从坎布里亚纪系列2的精致保存的柱状外超结构.
- 阐明生物矿物化的柱状结构的进化增长和适应性创新,在早期的酸盐状臂足动物中.
主要方法:
- 微观分析非常保存的柱状外超结构.
- 对新物种的层次性结构,上皮细胞模具和柱状尺寸的审查.
- 对解剖学特征进行比较分析,以揭示进化转变.
主要成果:
- 首份关于早期eobolids,Latusobolus xiaoyangbaensis和Eoobolus acutulus*中保存良好的柱状外超结构的报告.
- 发现基于酸的外由堆叠的三明治柱状单元组成.
- 生物控制,有机矩阵介导的分泌和柱状结构的构建的演示.
结论:
- 堆叠的三明治柱状架构在语言状臂足动物的进化中发挥了重要作用.
- 在Eoobolidae,Lingulellotretidae和Acrotretida中发现了柱状的解剖学特征的持续转变.
- 这些发现揭示了坎布里亚爆炸期间生物矿物质柱状建筑的进化增长和适应性创新.
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