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The Paso Otero 5 site is located in the middle basin of the Quequén Grande river (Buenos Aires Province, Argentina). This site is the first recorded Pleistocene-Holocene archaeological context in the grasslands of the Interserrana Bonaerense Area at which extinct megamammals and a ‘fish-tail’ projectile point have been recovered in association from buried soil dated to c. 10,200–10,450 BP.
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Gustavo A. Martínez (2001) studied this question.
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