Lamar phase peoples from central Georgia. During this time period ceramic traditions change and styles of decoration and manufacture from central Georgia become incorporated into the local traditions associated with the Fort Walton culture. This period also represents the transformation of the Apalachee peoples of the Fort Walton tradition and the collapse of the chiefdom as aboriginal populations declined following contact with European explorers and colonizers. Early in the period larger settlements appear, possibly because of the influx of Lamar peoples, although they are still located in typical Fort Walton locations such as near ridge and hilltops and around water sources such as ponds and lakes. Later in the period populations begin to drop, most likely in response to the introduction of diseases introduced by Europeans such as the Hernando de Soto entrada which passed through the area in 1539. By the time of the Spanish Mission Period the villages are smaller and located around mission churches.[1]
Early in the Leon-Jefferson period ceramics are well-made vessels, using grit tempering rather than the more common
Ocmulgee National Monument). By around 1600 local potters are making Lamar Phase styled vessels but continuing to use their own clay and/or grog as a tempering agent. The most common shapes for ceramic vessels at this time were bowls with outward flaring rims, very similar to Lamar style wares. As this period progresses the quality and craftmanship of ceramics deteriorates.[1]
Letchworth Mounds of Jefferson County as well as Tallahassee's Lake Jackson mound. It is generally defined as encompassing the Florida Panhandle east from the Ochlockonee River to the Aucilla River
. Frequently, there are cultural differences between the inland groups who relied on the inland resources of what are now Leon and Jefferson counties and those who used coastal resources.