It's a scraper and probably used in hide work. It's very similar to what we find in the Plains Village farmer areas from about a 1,000 years ago, but willy99 if you're in Wapanucka OK, that area was occupied by the Calf Creek people back to about 6,000 years ago. (I think that's middle Archaic?) They made the most interesting points, and they liked to camp in a high place with a good view all around. Another thing about your find, a scraper was a household tool and usually is found on the site of an old village. So get back out there as there's probably more artifacts in that area.