The skeletons of a man and woman were found Sept. 13 by farmer Warren Jessen, who was building a deer stand in his pasture north of Center.
The pasture is on private land, but falls within the boundaries of the Santee Sioux Reservation.
State archaeologist Gayle Carlson removed the bones from the site. She classified them as “unknown prehistoric,” making them too old to belong to Santee Sioux ancestors.
Still, Knox County sheriff Jim Janecek says he turned the bones over to Santee Sioux CEO Arthur “Butch” Denny.