In this section we move from the analysis of various formal classes of data defined by non-historical criteria to an anlysis of categories of artifacts treated historically, i.e., their spatial and formal characteristics within the remains of single communities.

The discussion of these occupations, although suspected of being rather numerous, must by virtue of the nature of the data be very skimpy. The relevant data are amost exclusively obtained from the surface collections. Their manner of clustering suggests that there was some range of variation in the activities carried out.

Even a cursory examination of the projectile points recovered in the surface collection indicates the presence of multiple preceramic occupations. Types represented include Dalton points, Modoc Expanding Stem points, Faulkner Side-Notched points, and points of the Saratoga and Boaz type clusters. The detailed typological analysis of these points, as well as of other chipped stone materials, should make possible a more rigorous definition of the number of components. At present our understanding is limited by the nature of the data thus far analyzed.