The FLK West sequence is divided into six fluvial stratigraphic levels, each of which provided archaeological materials. In the present paper we outline the major similarities and differences displayed by the lithic assemblages in FLK W, particularly the lower assemblages, which have yielded more objects than the upper ones. The differences noted in the absence-presence and frequency of LCTs may be explained in occupational terms, while the similarities in raw material selection, core reduction and flake retouching patterns indicate homogeneous cultural decisions and cognitive skills. We conclude that these assemblages were likely formed by the same hominin group or taxon and, therefore, the assemblage variability registered would correspond to different expressions of the same economic structure.

中文翻译：

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Acheulean没有手斧？FLK West（坦桑尼亚Olduvai的最低层II）的组合变化。

FLK West层序分为六个河流地层，每个层都提供了考古资料。在本文中，我们概述了FLK W中的石块组合所显示的主要异同，特别是下部组合，它们产生的对象多于上部组合。LCT的存在与否和频率上的差异可以用职业术语来解释，而原料选择，堆芯减少和薄片修饰模式的相似性则表明了同质的文化决策和认知能力。我们得出的结论是，这些组合可能是由相同的人参素组或分类单元形成的，因此，所记录的组合变异性将对应于同一经济结构的不同表述。