类动物的运动能力指数:初步评估
Daniel F Ceroula1, Rubi V Pêgas2, Anderson S Nascimento1
1Universidade Federal do ABC, Laboratório de Paleontologia de Vertebrados e Comportamento Animal, Al. da Universidade, s/n, 09606-070 São Bernardo do Campo, SP, Brazil.
Anais da Academia Brasileira de Ciencias
|December 19, 2025
概括
龙四肢的强度表明了良好的陆地运动能力,前肢比后肢更强. 较大的龙具有较低的运动能力指数,表明地面能力较低.
科学领域:
- 古生物学的古生物学
- 生物力学 生物力学
- 脊椎动物的移动方式
背景情况:
- 龙具有独特的形态,使得陆地运动与现存的脊椎动物的直接比较具有挑战性.
- 鉴于它们独特的解剖学,评估类动物的陆地能力需要间接方法.
研究的目的:
- 使用运动能力指数推断龙的陆地运动能力.
- 研究类动物体育能力指数,四肢强度和身体质量之间的关系.
主要方法:
- 估计了25个龙标本的体质,曲强度和钢脚轴强度指数.
- 应用线性回归模型来分析索引和身体质量之间的关系.
- 对龙指数与已灭绝和现存动物指数的比较分析.
主要成果:
- 肋骨表现出比股骨更高的运动能力指数,表明前肢相对于后肢更强.
- 在运动能力指数和身体质量之间发现了负相关性.
- 龙表现出良好的陆地运动能力,包括以前被低估的形形态.
- 与大小相似的pterodactyloids相比,pteranodontoids显示较低的股骨轴压缩指数 (ACI).
结论:
- 龙前肢相对比后肢更强大,可以抵抗曲和轴向压缩.
- 龙体质量的增加与陆地运动能力的下降有关.
- 龙,包括早期的形式,比以前认为的更熟练地在陆地上,尽管像pteranodontoids这样的特定群体有局限性.
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