Heavy basal grinding is almost always present. The base is usually convex or straight, thick, and rounded leading up to the notch. The blade area is large and broad on unreworked specimens, and the edge can be serrated. This area, however , is often reworked, resulting in characteristic beveled edges and a rhomboidal cross-section. Blade edges are usually straight.
Surface flaking is typically broad and shallow.
Pressure flaking is concentrated at the blade edge and hafting area. Reworking of the Thebes point is executed by parallel pressure flaking on the blade edge on either the left or right side of both faces. Thebes sites tend to be concentrated to upland biotic zones such as terraces and fossil beach ridges. The large variation in metrics is due to extensive resharpening. Copyright , The London Chapter of the Ontario Archaeological Society.