The refinement of handaxes, defined as increasing planview symmetry and profile thinness, has been used to distinguish Early and Late Acheulian assemblages. However, recent studies have found that this is not a ubiquitous trend throughout the Acheulian industry. Yet, research suggests that Late Acheulian handaxes differ from earlier forms in the complexity and extent of thinning procedures. To test the discriminatory power of thinning in distinguishing Early and Late Acheulian handaxes, cross‐sectional shapes are compared through geometric morphometric techniques. Results suggest that analysing cross‐sectional outlines can identify variance relating to reduction processes, which differentiate handaxes from Early and Late Acheulian assemblages.

中文翻译：

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初步研究比较了细化过程对早期和晚期Acheulian斧头横截面形态的影响

定义为增加平面图对称性和轮廓薄度的手轴的细化，已被用来区分早期和晚期的阿彻勒组合。但是，最近的研究发现，这在整个阿彻勒邦工业中并不是普遍存在的趋势。但是，研究表明，后期阿彻勒手斧在稀疏程序的复杂性和范围方面与早期形式有所不同。为了测试细化在区分早期和晚期阿彻勒手斧方面的区分能力，通过几何形态计量学技术比较了横截面形状。结果表明，分析横截面轮廓可以识别与还原过程相关的方差，这些差异可以将手斧与早期和晚期阿契尔时期的组合区分开。