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重新分析桑布鲁皮塞克斯 (Samburupithecus) 发现与 nyanzapithecines 有相似之处

Kelsey D Pugh¹, Julie A Strain², Christopher C Gilbert³

¹Division of Anthropology, American Museum of Natural History, Central Park West at 79th Street, New York, NY 10024, USA; New York Consortium in Evolutionary Primatology, New York, NY, USA.

Journal of human evolution

|January 14, 2025

概括

桑布鲁皮塞克 (Samburupithecus kiptalami) 被确定为一个晚期出现的非洲形形虫,这是一个干型人类的家族. 这一发现表明了化石猿的多样性,并挑战了关于它们迁徙模式的先前想法.

科学领域:

古人类学古人类学.
灵长类动物的进化
脊椎动物古生物学脊椎动物古生物学

背景情况:

肯尼亚晚期米奥琴时期的一种子Samburupithecus kiptalami因其原始特征而被分类变化.
以前的假设表明,Samburupithecus的茎类人形位置或更广泛的非洲猿类亲缘关系.
桑布鲁皮塞克斯和欧欧皮塞克斯 (nyanzapithecines和Oreopithecus) 之间的牙相似性促使进一步调查.

研究的目的:

为了重新评估Samburupithecus kiptalami的遗传学位置.
为了调查Samburupithecus和黄石家族之间的潜在亲缘关系.
评估在中新世纪晚期的干类人种的多样性和地理分布.

主要方法:

关于桑布鲁皮塞克斯牙的定量分析.
牙和大的特征的定性评估与类虫有共同之处.
与现有的化石猿人记录进行比较分析.

主要成果:

桑布鲁皮塞克斯表现出与Oreopithecidae家族保持一致的特征.
包括桑布鲁皮塞克斯 (Samburupithecus) 在内的奥里奥皮塞克类动物表现出广泛的体型尺寸,与现存的猿类动物相比.
在米奥森晚期化石缺口之前和之后,非洲的石类动物的存在表明了采样偏差,而不是最近的移民.

结论:

桑布鲁皮塞克 (Samburupithecus kiptalami) 被认为是一种晚期出现的非洲形形虫,扩大了这种干型人类家族已知的多样性.
这项研究突出显示,干类人种和类人种之间存在显著的身体尺寸变化.
晚期米奥森非洲记录中的化石猿人稀有性归因于采样偏见,而不是缺乏存在.

关键词:

猿类的猿类动物.人类类类型的原始人.晚期的米奥森时期.形态测量形态测量形态测量类甲虫类的类甲虫类.

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