Published online by Cambridge University Press: 20 January 2017
In 1937 John M. Goggin found a series of blow-outs in the San Jose river valley, western New Mexico, which produced serrated projectile points reminiscent of Pinto Basin material. The following year Joseph H. Toulouse, Jr., identified 3 distinct cultural horizons, each with an associated sand stratum (Bryan and Toulouse 1943). The most recent stratum, made up of loose drifting surface sand, contained Pueblo and recent cultural debris. Beneath this was a layer of consolidated buff to white colored sand identified as late dune. In this stratum were , found diagnostic milling stones and the distinctive small, serrated Lobo point. Under this buff sand lay a compact layer of red sand, old dune, with similar milling stones but with a larger serrated point type today known as the San Jose.