Science · 2011 · 223 citations · 12 references
HumanitiesAnthropologyArchaeologyGeoarchaeologyPrehistoric ArchaeologyZooarchaeologyFunerary ArchaeologyPaleolithic ArchaeologyArtifact Assemblage AnalysisStone Tool MorphologyStone Tool TaxonomyTool Assemblages
Compelling archaeological evidence of an occupation older than Clovis (~12.8 to 13.1 thousand years ago) in North America is present at only a few sites, and the stone tool assemblages from these sites are small and varied. The Debra L. Friedkin site, Texas, contains an assemblage of 15,528 artifacts that define the Buttermilk Creek Complex, which stratigraphically underlies a Clovis assemblage and dates between ~13.2 and 15.5 thousand years ago. The Buttermilk Creek Complex confirms the emerging view that people occupied the Americas before Clovis and provides a large artifact assemblage to explore Clovis origins.
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Beringian Standstill and Spread of Native American Founders
Erika Tamm, Toomas Kivisild, Maere Reidla et al. · PLoS ONE · 2007 · 700 citations · Full text
DNA from Pre-Clovis Human Coprolites in Oregon, North America
M. Thomas P. Gilbert, Dennis L. Jenkins, Anders Götherström et al. · Science · 2008 · 369 citations · Full text