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Significance We report a rare example of a 1.4-million-y-old large bone fragment shaped into handaxe-like form. This bone tool derives from the Konso Formation in southern Ethiopia, where abundant early Acheulean stone artifacts show considerable technological progression between ∼1.75 and &lt;1.0 Mya. Technological analysis of the bone tool indicates intensive anthropogenic shaping. Edge damage, polish, and striae patterns are consistent with use in longitudinal motions, such as in butchering. The discovery of this bone handaxe shows that advanced flaking technology, practiced at Konso on a variety of lithic materials, was also applied to bone, thus expanding the known technological repertoire of African Early PleistoceneHomo .

A 1.4-million-year-old bone handaxe from Konso, Ethiopia, shows advanced tool technology in the early Acheulean