哺乳动物脊椎功能的起源是通过数字曲实验揭示的
Katrina E Jones1,2, Kenneth D Angielczyk3, Stephanie E Pierce1
1Museum of Comparative Zoology and Department of Organismic and Evolutionary Biology, Harvard University, 26 Oxford Street , Cambridge, MA 02138, USA.
Proceedings. Biological sciences
|July 9, 2024
概括
关键的脊椎功能在哺乳动物之前就已经进化了. 数字曲实验揭示了虫稳定了它们的干部,这是朝着复杂的哺乳动物脊椎和突触-哺乳动物过渡迈出的一步.
科学领域:
- 古生物学的古生物学
- 生物力学 生物力学
- 进化生物学 进化生物学
背景情况:
- 了解化石中的功能进化是具有挑战性的.
- 计算建模为研究已灭绝生物的功能提供了新的途径.
- 非哺乳动物的突触体对于研究哺乳动物转型至关重要.
研究的目的:
- 为了重建非哺乳动物突触类动物的脊椎功能.
- 为了研究突触体-哺乳动物过渡的功能基础.
- 为了比较跨同类动物和现存四足动物的脊椎力学.
主要方法:
- 数字曲实验被用来估计脊椎运动范围和关节硬度.
- 分析了8种非哺乳动物的突触体物种.
- 包括现存的,爬行动物和哺乳动物的比较数据.
主要成果:
- 哺乳动物的关键脊椎功能是在皇冠哺乳动物之前演变的.
- 类动物稳定了他们的后干,并发展了前干轴旋转.
- 后面的斜腰曲在干部进化后的哺乳动物,可能是therians.
结论:
- 脊椎功能逐渐进化,在非哺乳动物祖先中出现了显著的步骤.
- 哺乳动物干的功能多样化涉及现有区域的合并.
- 哺乳动物脊椎的进化涉及多个功能和进化阶段.
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