This report, a preliminary delineation of a new lithic complex from the Central Plains, is presented for the immediate purpose of aiding other archaeologists working in the area. Once one has left such easily recognizable markers as the Folsom complex, the details of the archaic horizons of the Great Plains are confused until we reach such lithic complexes as those found at Signal Butte (Strong, 1935), Ash Hollow Cave (Champe, 1946), and more recently, Nebo Hill (Shippee, 1948). The primary value of defining the Frontier Culture complex at this time is that it affords a “pure” and relatively complete lithic complex by means of which comparative typological work in the Plains Archaic can be furthered.