LAWRENCE, KANSAS—Rolfe Mandel and a team of students from the University of Kansas are waiting for the results of tests to date the sediment samples they took from the Coffey Site, located in northeast Kansas along Tuttle Creek. “It will tell us a lot about the history of the peopling of the Americas and in particular the peopling of the Great Plains, especially the Central Great Plains, where it’s been pretty much a black hole in terms of unraveling that story,” he told Phys.org. They are hoping to find evidence of Clovis and Pre-Clovis people. “We are talking about small family units, hunters and gatherers. It’s a group of five or six, maybe a little bit larger wandering across the landscape. They’re following herds of animals. Of course, at the time, the assemblage of animals looked a lot different than what it does today,” he added. For the latest on how archaeologists are rethinking the early history of the New World, see ARCHAEOLOGY's special section "America, in the Beginning."