The defining factor in the St. Johns series is the temper.
The temper in this type is diatomaceous earth.
The diatomaceous earth occurs along the St. Johns River and is in the clay naturally.
Corncob marking on diatomaceous earth-tempered pottery.
Vessel forms are similar to the St. Johns Plain bowl forms.
Woodland, maybe into the early Mississippian St. Johns II period.
This type occurs in the Georgia Coast, around Valdosta, and in the Okefenokee swamp.
Extreme southeastern Georgia.
Goggin 1952:104.