U of A professor part of team that discovered 2.75 million

FAYETTEVILLE, Ark — Professor Amelia Villaseñor, an associate professor of anthropology at the University of Arkansas, was a part of a team that discovered 2.75 million-year-old stone tools in Kenya.

The team's findings revealed profound consistency in the use of stone tool technology over time.

According to a release, the tools were recovered from three sedimentary layers of the Turkana Basin, which is located at a site on the northeast side of Lake Turkana. The stone tools demonstrate a tradition of continuous use over a course of 300,000 years.

Each of the distinct layers of the Turkana Basin has been dated to about 2.75, 2.60, and 2.44 million years ago.

"These layers each preserve different snapshots of environmental conditions from humid floodplains to arid riverine settings. Thi