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Limited research exists on preceramic sites in south-central coastal Peru. Systematic survey and excavations at Pampa Lechuza, Ica, now confirm a Late Pleistocene–Early Holocene Paiján (13 000–9000 cal BP) occupation and identify Quispisisa-sourced obsidian Paiján points, which are the only examples currently known to use this raw material.
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Dulanto et al. (2024) studied this question.
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