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( G) 2014 wall profiles showing stratigraphy, locations of artifact finds, and location of radiocarbon samples. (A) to (E) are flakes (D) shows evidence of use. Proxy evidence from the sediments at Page-Ladson also indicate that humans coexisted with megafauna in the American Southeast for ~2000 years before the large mammals became extinct at ~12,600 cal yr B.P. Page-Ladson is the first pre-Clovis site to be documented in the southeastern portion of North America and demonstrates that the earliest people to enter North America were exploring the Gulf Coastal Plain at the same time other areas of the continent were being populated.

were found in a buried and well-dated stratified context.

Here, we report our investigations at the Page-Ladson site, Florida, where artifacts dating to ~14,550 cal yr B.P. At present, pre-Clovis sites include Paisley Caves, Oregon ( 3) Schaefer and Hebior, Wisconsin ( 4) Monte Verde, Chile ( 5) Debra L. is still sparse because of a number of factors, most importantly site visibility and recognition. The archaeological record demonstrating that humans occupied the Americas between ~14,000 and 15,000 cal yr B.P. Genetic studies of modern Native Americans and ancient human skeletons indicate that the initial peopling of the Americas occurred before the appearance of the Clovis complex, dated to ~13,000 calendar years before the present (cal yr B.P.) ( 1, 2), but this interpretation requires confirmation by empirical archaeological evidence.

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