In recent years, however, researchers have unearthed many sites that appear to be pre-Clovis, some of them potentially doubling the time frame people have been in the Western Hemisphere.

Other artifacts can help date the site to as early as 20,000 years ago. The Gault Site is among a dozen or so "pre-Clovis" sites in the Americas. Since an earlier presence of humans predates the ...

Advances in our understanding of the archeological record suggest humans were in the Americas well before Clovis. Important pre-Clovis data have been recovered from the Meadowcroft Rockshelter ...

The paper, by Dr. Michael R. Waters of Texas A&M University in College Station, Texas, and colleagues, was titled, "Pre-Clovis Mastodon Hunting 13,800 Years Ago at the Manis Site, Washington." ...

The Clovis-first model “was refuted effectively in the ’90s with this archaeological site of Monte Verde in Chile that was accepted as a ‘true’ pre-Clovis site,” says Lorena Becerra-Valdivia, a ...

Bradley points to another example from archeology, referred to as the "Pre-Clovis Paradigm." For years, archeologists accepted that the first humans to arrive in North America were big game ...

Other artifacts can help date the site to as early as 20,000 years ago. The Gault Site is among a dozen or so "pre-Clovis" sites in the Americas. Since an earlier presence of humans predates the last ...