Source:

Gilreath, Amy J. and William R. Hildebrandt
19977   Prehistoric Use of the Coso Volcanic Field. Contributions of the University of California Archaeological Research Facility No. 56.

This timeline defines cultural periods for the Inyo-Mono region, and in particular the Coso area. Dates in the source are expressed in years B.P., interpreted here as calendar years before A.D. 2000.