Previous archaeological evidence suggests that humans settled in North America roughly 13,000 years ago when the Clovis hunter-gatherer tribes crossed the Bering Strait from Asia using now-melted bridges of icy land. Evidence for this theory comes mainly in the form of flint tools found throughout the southwestern United States. However, researchers from the University of Michigan believe they might have found new paleontological evidence that shows humans settled in North America much earlier than previously thought.
That evidence comes in the form of a near-complete mammoth skeleton that shows signs of butchering and has been radiocarbon dated to around 15,000 years ago, roughly a millennium before the Clovis hunters arrived. If the theories surrounding the Bristle mammoth are confirmed, they have the potential to re-write the history of mankind in North America.