The second of three chronological stages of the Cochise culture in southern Arizona and New Mexico, with dates clustering between 4000-500 BC. The appearance of distinctive, side-notched projectile points indicates an interest in hunting though a mixed food-gathering economy is indicated by assemblages commonly including cobble manos, shallow basin grinding slabs, choppers, and scrapers. There were large base camps, storage pits, and outlying specialized-activity camps that show some permanence. There is evidence from Bat Cave in New Mexico of the cultivation of primitive maize.