The Sedalia is a medium to large sized narrow lanceolate blade with straight to excurvate edges. There are three types of bases, straight, slightly concave or slightly convex. The straight variety seems to be more plentiful. Usually there is a slight constriction or tapering at the base . The typical Sedalia point is irregularly percussion flaked and then is finished with pressure retouching.
Some specimens exhibit slight recurvate blade edges near the base.
Lateral grinding occurs on about one third of the specimens. The quality of flaking on the Sedalia is often times much cruder than on the similar Agate Basin point type and the Sedalia is much wider and not as thick as the Nebo Hill point type. The size of the Sedalia can range from 76 mm to a huge 204 mm in length with the typical point being in the 150 mm range. The Sedalia type was named by R. M. Seelan in 1961 for specimens found near the town of Sedalia, Pettis County, Missouri. It is made from a light gray chert which has minute, round white and gray inclusions.