I just found 2 similar at a pay dig site while im stationed here in Texas. I thought they were just long triangular flakes that were unfinished. I didn't know how to knap them flat into an arrowhead. What is some of the techniques to flatten out a triangular flake where one side is flat and the other a high pyramid shape? Any videos showing that?
Made from thicker flakes or bifaces they’re 3 sided (tri hedral) hammersone percusssion flaking to smaller stone or antler punches. End is wedge shaped for woodworking like a small adze, or they can be struck to be used as chisels.
