骨定向,骨盆形状,以及人类双脚性的演变
Austin B Lawrence1, Ashley S Hammond2, Carol V Ward3
1Department of Organismal Biology and Anatomy, The University of Chicago, Chicago, IL 60637, USA.
Journal of human evolution
|January 7, 2025
概括
人类的骨盆进化表明,向腹部导向的,对于直立行走至关重要,出现了超过360万年前. 这一关键特征早于其他衍生人类的骨盆特征,突出了它在双脚运动中的早期作用.
科学领域:
- 古人类学古人类学.
- 灵长类动物的解剖学
- 进化生物学 进化生物学
背景情况:
- 与其他灵长类相比,人类的骨盆表现出独特的特征,包括侧面导向的腹腔叶片和更宽的圣骨.
- 骨定向,可能与双脚运动和负载传输有关,是理解人类骨盆进化的一个关键领域.
研究的目的:
- 为了比较现代人类的三维骨定向,一个多样化的现存人类类灵长类动物群,以及关键的化石原始人.
- 为了确定在人类血统中变化的状骨方向的进化时间.
主要方法:
- 在化石和现存的灵长类骨盆的in silico 3D建模.
- 注册关节骨模型到关节骨的地标,以确定acetabular方向.
- 对跨物种和化石种类的acetabular方向进行比较分析.
主要成果:
- 无论是人类还是化石原始人 (阿弗拉罗皮塞克斯·阿法伦西斯,阿弗拉罗皮塞克斯·非洲人,阿弗拉罗皮塞克斯·西迪巴,阿弗拉罗皮塞克斯·西迪巴,阿弗拉罗皮塞克斯·尼安德特人) 都比其他现存的人类类动物显示出明显更多的腹部导向的.
- 侧面面向的形体是非人类类人类的特征.
- 与人类相似的脚骨方向至少在360万年前就在原始人身上建立了.
结论:
- 乙体的腹部方向是人类骨盆形态的基本特征,与习惯双脚性有关.
- 这种特征在人类进化的早期发展,先于其他衍生的骨盆特征,与先进的机动和其他适应性有关.
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