已知最早的形灵长类灵长类的辐射
Nelson M Novo1, Gabriel M Martin2, Laureano R González Ruiz2
1Instituto Patagónico de Geología y Paleontología (CCT CONICET-CENPAT), Puerto Madryn, Argentina.
American journal of primatology
|May 16, 2025
概括
已证实,米奥森时代的白金属灵长类动物索里亚塞布斯 (Soriacebus) 和马佐尼塞布斯 (Mazzonicebus) 是小类动物,而不是干白金属灵长类动物. 这支持了长血统假说,即南美洲的小类动物进化.
科学领域:
- 古生物学的古生物学
- 灵长类动物的进化
- 新热带灵长类动物
背景情况:
- 苗代巴塔哥尼亚平原灵长类灵长类灵长类动物Soriacebus和Mazzonicebus的遗传分类有争议.
- 这些种类是从有限的化石材料中知道的,这导致了对它们的进化关系的不同解释.
研究的目的:
- 测试关于索里亚塞巴斯和马佐尼塞巴斯的遗传关系的假设.
- 为了确定这些类型是否代表干金或属于金血统.
主要方法:
- 对分类学信息性特征进行了全面的特征分析.
- 基因组学分析是使用精益求精的方法进行的,将形态和分子数据与软件包TNT结合在一起.
- 还实施了现有数据矩阵的复制研究.
主要成果:
- 发现索里亚塞布斯和马佐尼塞布斯是深深地嵌在皮特类群中的姐妹分类.
- 这些化石不是干金刚石,与较年轻的小金刚石的大多数差异归因于原始的性格状态.
- 它们的相似性和功能模式强烈表明它们与活生生的萨基和乌卡里有着密切的关系,与活生生的萨基和乌卡里相吻合.
结论:
- 苗代巴塔哥尼亚属Soriacebus和Mazzonicebus绝对是小类动物.
- 这些发现并不支持将它们解释为茎.
- 这些结果证实了长血统假说对类动物进化的论证.
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