Maybe the 1992 movie Brendan Fraser film Encino Man wasn’t too far from the mark?

Fossilized human feces and other evidence from a West Coast cave demonstrates the existence of a long-lost, 13,500-year-old American culture, scientists said Thursday. 

The fossilized feces, known to researchers as a coprolite, from the Paisley Caves in Oregon has turned assumptions about the history of the Americas on its ear.

“Coprolites are as good as a human skeleton,” Dr. Thomas Stafford, Jr. of Stafford Research Laboratories said during a briefing for science journalists. This particular one left him stunned....