There was this idea that humans arrived and killed everything off very quickly — what’s called ‘Pleistocene overkill,’” said Daniel Odess, an archaeologist at White Sands National Park in New Mexico. But new discoveries suggest that “humans were existing alongside these animals for at least 10,000 years, without making them go extinct."

https://www.ctvnews.ca/sci-tech/giant-sloths-and-mastodons-coexisted-with-humans-for-millennia-in-americas-new-discoveries-suggest-1.7153332