类乌罗帕塔吉姆的形状,结构,功能和演变
David W E Hone1, Edina Prondvai2,3
1Queen Mary University of London, School of Biological and Behavioural Sciences, Mile End Road, London, E1 4NS, U.K.
Anais da Academia Brasileira de Ciencias
|September 17, 2025
概括
类恐龙的尾巴膜或uropatagium对于早期的飞行至关重要,但在后来的物种中减少了. 它的进化反映了龙运动和飞行能力的重大转变.
科学领域:
- 古生物学的古生物学
- 进化生物学 进化生物学
- 生物力学 生物力学
背景情况:
- 恐龙的飞行很早就发展了,翅膀膜 (brachiopatagium) 是一个关键的创新.
- 尾部膜的尿道膜在空气动力学上很重要,但与主翼相比,研究不足.
- 了解uropatagium的作用对于理解龙飞行进化的理解至关重要.
研究的目的:
- 综述目前关于类恐龙uropatagium的形状,范围,结构和功能的知识.
- 综合化石记录的证据,包括软组织,骨科,和 ichnology.
- 概述乌罗帕塔形态学的进化趋势.
主要方法:
- 直接化石证据的分析 (软组织的保存).
- 间接证据的解释 (骨科和动物科学数据).
- 跨多种类型的类动物类别进行比较的综述.
主要成果:
- 在类动物种群中,uropatagium的差异很大.
- 早期的类动物拥有一个大型的,与尾巴和第五个脚相结合的汇合性uropatagium.
- 衍生出类龙的龙表现出膝关节和尾巴底部之间的缩小,三角形的uropatagium.
结论:
- 在早期的类动物中,uropatagium对于飞行至关重要.
- 它的减少和修饰在类动物中标志着一个重要的进化过渡.
- 尿道的变化与甲虫飞行和运动的变化相关.
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