This is Lamar Incised pottery that was given the name Rood's Incised by Joseph Caldwell for sherds from the Rood's Landing site in Stewart County, Georgia (9SW1).
Incising on sand / grit-tempered pottery. The incising is broad lined and carefully executed. Vessel forms are hemispherical bowls and globular vessels. Vessels are well smoothed or burnished, and are usually a homogenous dark gray surface color. Rims are neatly folded.