LAWRENCE, Kan. (AP) — Researchers are waiting to hear if evidence found at a Pottawatomie County site this summer can be tied to the founding populations of the Americas.

Rolfe Mandel, a University of Kansas anthropology professor, tells the Topeka Capital-Journal that if sediments at the site are determined to be more than 13,500 years old, it would open the door for the earliest evidence of the Clovis people inhabiting the Central Great Plains. They wandered across America following animal herds.

Mandel leads the excavation of the Coffey site that’s a part of the university’s Odyssey Project. Mandel says he’s waiting for the results of a dating method to reveal the age of deposits that contained the artifacts found at the site. Items found in July include a tool called a hafted drill.