Agate tool found in Oregon destroys Clovis theory

Posted On: May 17th, 2015 at 18:00

United States
Staying with North America, an orange agate tool has been found beneath a layer of ash from the eruption of Mount St. Helens, which occurred 15,800 years ago.
The “Clovis theory” has now well and truly been blown out of the water, or out of the volcano in this case, by nearly 3,000 years.
The date for the arrival of humans in the Americas will continue to be pushed back further in the coming years.

http://www.nbcnews.com/science/science-news/ancient-stone-tool-intrigues-archaeologists-oregon-n318356