The Nonnast site (39ML0009) is a Plains Village site located in the Prairie Pothole region of Marshal County, South Dakota. The site was initially identified by a surface scatter of pottery that contained both Great Oasis and Mill Creek ceramic types. The Nonnast site is located outside the normal distribution for these two cultures which are concentrated in southeast South Dakota and northwest Iowa. The site was formally tested in 2015 then again in 2017. The resulting thesis is an analysis of the ceramic and other culturally diagnostic material recovered from the excavations. The goal of the research is to firmly establish who occupied the Nonnast site and when. With the use of AMS dates, chi-square statistical analysis and ceramic typologies it was determined that the Nonnast site contains one component that most closely resembles the Over focus of the eastern division of the Initial Middle Missouri
