The earliest of three stages of the Cochise culture, named for a cluster of sites in southeast Arizona, and dating from 6000 / 7000 BC to c 4000 BC. Evidence of plant food processing (cobble manos) together with split and burnt faunal remains, imply an Archaic lifestyle, although there are almost no projectile points, blades, or knives. Besides milling stones, it is characterized by various scrapers. The remains of food animals indicate that some hunting was done.