When comparing the retouched and unretouched blades, the blade tools with convergent lateral edges are double more recurrent (31.7%) than unretouched blades with convergent edges (14.7%) showing a clear trend also for convergent pointed morphology among the retouched blades ( S8 Fig ) .
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Curated character of the Initial Upper Palaeolithic lithic artefact assemblages in Bacho Kiro Cave (Bulgaria).
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