Radiocarbon dating on bone
After years of controversy, it is now generally accepted that artifacts found at this site date to more than 12,000 BCE, when the Clovis people presumably were just starting south through the Canadian Rockies.If the ancestors of the Monte Verde people crossed the Beringia land bridge, they must have done so at least 16,000 to 20,000 years ago in order to have traversed the thousands of miles necessary to reach this extreme outpost.The land bridge, called Beringia, existed during the final period of the last Ice Age, about 15,000 years ago.After crossing Beringia and pushing on to Canada about 10,000 BCE, the Siberian immigrants continued southward through a corridor in the great ice sheets to emerge in what is now the lower 48 states.
The ruins of a dozen huts were preserved when the creek later rose, producing a peat bog that inhibited decay of the organic remains for the intervening thousands of years.
After the Pleistocene animals became extinct, these ancient Americans diversified to fishing, gathering, and hunting smaller game and marine mammals.
From these different adaptations arose the many diverse cultures of pre-Columbian America, eventually developing into great civilizations.
In broad outline, this is the picture painted by the “Clovis First” theory, named after the distinctive and highly efficient spearheads fashioned by these Ice Age hunters that were initially discovered near Clovis, New Mexico.
The Clovis people spread quickly throughout the New World, populating most of North and South America in less than 1500 years.This view of American prehistory was unchallenged for decades.