聪明人 (Homo sapiens) 的化石肋骨为现代人类进化提供了新的见解
José M López-Rey1,2, Isabelle Crevecoeur3, Hila May4,5
1Paleoanthropology Group, Department of Paleobiology, Museo Nacional de Ciencias Naturales (MNCN-CSIC), Calle José Gutiérrez Abascal, Madrid, Spain. jolopezr@mncn.csic.es.
Communications biology
|July 10, 2025
概括
化石人类肋骨,包括早期的智人,显示球状比例,而不是在现代人类中看到的苗条胸部. 肋骨的形状因气候而异,表明人类复杂的解剖学变异.
科学领域:
- 古人类学古人类学.
- 人类进化人类进化
- 骨生物学 骨生物学
背景情况:
- 纳里奥科托姆男孩的胸表明现代人类 (智人) 的衍生,苗条的胸部.
- 化石homo sapiens胸的数字重建缺乏,使其胸部形态不确定.
- 了解化石Homo sapiens胸形态对于重建人类进化历史至关重要.
研究的目的:
- 为了重建和比较化石homo sapiens个体的胸.
- 为了研究化石和近期人类胸形态的变化.
- 为了确定化石Homo sapiens是否具有原始或衍生的胸部条件.
主要方法:
- 化石胸的数字重建 (纳兹莱特·哈特尔2号,奥哈洛二号H2号,多尔尼·维斯托尼斯13号,奥茨).
- 几何形态分析分析.几何形态分析.
- 与最近的智人人类和其他人类化石进行比较 (Nariokotome Boy, Kebara 2, Shanidar 3).
主要成果:
- 化石homo sapiens肋骨表现出球状的比例,类似于最近的人类.
- 肋骨的大小和形状与气候有关:在温暖的气候中更小,圆柱形,在寒冷的气候中更大,更宽的形状.
- 埃茨的胸显示出混合的特征,可能适应了阿尔卑斯山的过渡.
结论:
- 智人胸形态是多样化的,包括精细的和粗的形式.
- 人类智人 (Homo sapiens) 的解剖学变异比以前假设的更复杂,更依赖于背景.
- 在人类进化过程中,气候在塑造Homo sapiens肋骨形态方面发挥了重要作用.
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