Found throughout the Midwest. Osceola centered in south-central Wisconsin. Medium sized side notched spear tips. Blades are triangular to parallel sided with Osceola predominately parallel, and converge sharply at the tip. Basal ears tend to line up with the blade edges.
Bases are slightly concave to commonly straight.
Concave forms tend to be larger and are probably an early variant, having evolved from Early Archaic notched forms. A few serrated or bevelled examples are known. Raddatz points with straight or slightly convex bases are generally smaller, and may represent a shift in hunting technology to compound shaft darts. For example, this reduction in point size appears to have coincided with the appearance of atlatl weights. The Madison Side Notched variant usually has a short base with shallow side notches close to the base.