Hello SoIll I have a piece very similar to yours but mine has more of a cresent shape about 4in.Lan 5/8W. with a point like that one and a scraper edge mine has been classed as a paleo cresent knife.
A very nice blade tool that could be paleo but could just as well be Late Prehistoric in age. Have you found any other artifacts that could help date the site the blade came from?