Time Frame: 900

The culture of late prehistoric groups in Iowa is characterized by a series of tiny projectile points which are true arrowheads. These arrowheads include simple triangular points, double-notched points with a side notch on each edge, and multiple-notched point with side notches on each edge and a notch in the base.

Illustrated by Mary Slattery, Will Thomson, and David Crawford
Office of the State Archeologist
Adapted from Office Of The State Archaeologist, Educational Series 6 - Glenwood Culture