ADVANTAGES

Because their culture changed continually (and not always gradually), researchers have divided the occupation into periods, each with its characteristic complex of settlement and artifact styles. Since 1927 the most widely accepted nomenclature has been the "Pecos Classification," which is generally applicable to the whole Anasazi Southwest. Although originally intended to represent a series of developmental stages, rather than periods, the Pecos Classification has come to be used as a period sequence:

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