加泰罗尼亚虫和其他伊比利亚虫的牙甲-牙结合形状
Florian Bouchet1, Clément Zanolli2, Matthew M Skinner3
1Institut Català de Paleontologia Miquel Crusafont (ICP-CERCA), Universitat Autònoma de Barcelona, Edifici ICTA-ICP, c/ Columnes s/n, 08193 Cerdanyola del Vallès, Barcelona, Spain.
Journal of human evolution
|September 7, 2024
概括
一种化石灵长类动物Pliobates cataloniae被证实是个多类灵长类动物,这是基于质质-牙结合形状分析. 这项研究使用3D几何形态测量来澄清其进化关系,将其与原始人区分开来.
科学领域:
- 古人类学古人类学.
- 灵长类动物的进化
- 比较解剖学的比较解剖学
背景情况:
- 罗巴特斯加泰罗尼亚的基因排列,一个早期的米奥森时期的鱼,一直在争论中.
- 最近的化石发现支持其在Pliopithecoidea超级家族中的分类.
- 了解它的亲属关系对于重建灵长类动物进化历史至关重要.
研究的目的:
- 为了定量评估Pliobates cataloniae的遗传位置.
- 为了比较Pliobates的牙面膜 - 牙结 (EDJ) 形状与其他多类动物和人类动物.
- 评估EDJ形状分析在灵长类动物分类学中的实用性.
主要方法:
- 基于地标的三维几何形态学应用到状EDJ形状.
- 多变量统计分析,包括主要组件分析 (PCA) 和正规变量分析 (CVA).
- 变试验用于评估类动物内的变异性,并将其与现存的属性进行比较.
主要成果:
- 类动物表现出与其他类类动物,特别是类类动物 (cruzeliids) 的状EDJ形状相似.
- 多变量分析始终将类动物与类动物聚集在一起,与灭绝的和现存的原始人类动物分开.
- 在Pliobates中,EDJ形状变化不那么明显,而不是外面面膜面变化.
结论:
- 卡塔罗尼亚虫被证实是一个crouzeliid pliopithecoid,解决了以前的分类学争议.
- 这项研究验证了EDJ形状的3D几何形态测量用于灵长类动物遗传学分析的使用.
- 头骨后与原始人类的相似性可能是趋同的,但并不表明密切的家族遗传联系.
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