A team of archaeologists from the Nebraska Historical Society unearthed the skeleton on Tuesday, about three weeks after Klay Evers and Rob Dermit of Sioux City, Iowa, decided to begin digging around a skull that was protruding from the ground.
"The first thing you think of when you see a skull is wrongdoing. But there was no dental work, so then you get the feeling that it's very, very old," Evers said Wednesday.
Evers and Dermit notified the landowner, John Wortman, who in turn contacted local authorities. The site is near Newcastle, 27 miles west of Sioux City, in an area known to contain artifacts from nomadic tribes.