To assess the degree to which early stone tool using hominins modified their tool manufacturing behaviours in Eastern Asia, Shixia Yang and colleagues examined three well-known archaeological sites from the Nihewan Basin in North China. Stone tool comparisons between the archaeological sites of Xiaochangliang, Cenjiawan and Donggutuo indicate that technological skills increased at ca. 1.1-1.0 million years ago. The stone tools at Cenjiawan and Donggutuo show increasing levels of control in manufacturing procedures and some degree of planning in the tool-making process to produce the desired end-products.
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Source: Phys.org