Late prehistoric decorated ceramic assemblages from the Memphis and St. Francis areas of the Mississippi River Valley as described by Lipo [84] and Phillips et al. [10].

Analyses by Lipo [84] demonstrate that these assemblages have adequate sample size, classification consistency, no sherd size effects, and that the depositional environments are approximately equivalent. Given these analyses, we have confidence that the relative frequencies of ceramic types reflect patterns in the archaeological record and not the procedures involved in collection and description.