South American site yields controversial tools of pre-Clovis campers
E. Boëda et al/Antiquity 2014
New finds support the controversial idea that people inhabited South America before Clovis hunters reached North America around 14,000 years ago. Two sets of simple stone tools excavated at the base of a rocky slope in northeastern Brazil were made by small groups of settlers, one that lived about 24,000 years ago and another from around 15,000 years ago, researchers say.
The ancient site, Vale da Pedra Furada, lies near other proposed pre-Clovis camps (SN: 4/20/13, p. 9), a team led by archaeologist Eric Boëda of Université Paris Ouest Nanterre La Défense reports in the September Antiquity. Microscopic marks on 294 unearthed stones indicate that humans had sharpened the rocks. Radiocarbon dating of burned wood and soil analyses yielded ages for those stones. The new findings challenge a long