The Late Formative, Middle Horizon, Late Intermediate, Late Horizon, and Early Colonial Periods presented fewer difficulties in terms of ceramic identification. In none of these cases was frequency profile analysis employed. This was so for two reasons. First, no sufficiently detailed frequency seriation exists for these periods to allow such an analysis to be undertaken. The work of Steadman is unique in the region. And, second, it was possible to identify `markers' or `diagnostics' for each of these phases which were sufficiently common to permit the identification of sectors within multicomponent sites using surface collected material. In the case of the two Late Formative phases, these are plainware diagnostics. In the case of the later periods, painted sherds and distinctive rim forms were more useful, though in each a restricted range of plainware pastes could be used, as well. The details of the ceramics for each of these later periods will be presented in the corresponding chapters of this document. With the exception of the Late Formative period, they presented no real difficulties.