That helps. I wouldn't have a clue about Illinois, but lookin it up they have some scattered temporary paleo sites, but one big one in Jersey County. I would say your find is Paleo. Good to know the location of a find, as you can go back and check the research of that area and see what people were known to be there. Of course, you might make a find that establishes the presence of people in an area that were never thought to be there. Cool find, and keep checkin that spot.
This is JMO it looks like it was never finished, a flute was taken off one side and then maybe it snapped when they tried the other side and made a scraper out of it. Cool find
If we could have just gotten those Paleo guys to stay still there tools would not be so scattered. I think we all dream of that one camp site that is so very old.