Characterizing the American Upper Paleolithic

David B. Madsen

doi:10.1126/sciadv.ady9545

2025-10-22

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DOI：10.1126/sciadv.ady9545

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在北美，存在足够多的遗址，其相对较大的工具组合年代早于约13,500年校准年前（cal yr B.P.），足以评估其共享的石制品传统的潜在特征。它们的共享技术特征包括使用双核心-石叶和双面器技术，这与东北亚晚旧石器时代的技术相似。这些双重方法常被结合用于制作小型投射物尖状器，包括使用椭圆形横截面穹顶设计的带梗尖状器形式。类似的双重石制品技术在年代约为20,000年校准年前的日本北部遗址组合中发现。我们推测，一个拥有相似石制品技术的群体曾在古萨哈林-北海道-千岛地区附近某处隔离，并遗传性地演化为美洲的祖先人群。在约22,000至18,000年校准年前之间，该人群的一个子集沿着白令亚南部和西北海岸迁移至美洲。到约16,000至15,000年校准年前，他们已广泛分散于北美各地。

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