Scarce in the Upper Ohio Valley and rare north of the Wisconsin River.
Thebes are medium to large dart points or knives with distinctly square notches.
Broad thin flakes removed from both faces with careful pressure retouching. Shoulder barbs are usually rounded. Blades are well made with straight sides, often exhibiting sharp beveling from resharpening alternate edges. Basal edges may be straight or slightly concave or convex. Basal tangs are usually rounded or lobed, and bases are usually ground.