This large biface was discovered during the excavation of Craig
Mound by the Pocola Mining Company workers. An old Robert Bell
picture shows it once in the Harry T. Bell collection. Perino
refers to these types of bifaces as Round-End knives and dates them
to Early Caddoan at Spiro sometime between A.D. 1100 to A.D. 1300.
This example is made of Smoky Hills silicified chalk from the
Niobrara geological formation. It measures 9 1/2 inches (24.1 cm) long
and 2 1/2 inches (6.3 cm) wide.