The defining factor in St. Johns series is the temper.
The temper in this type is diatomaceous earth.
The diatomaceous earth occurs along the St. Johns River and in the clay naturally.
Simple stamping on diatomaceous earth-tempered pottery.
Designs are broad parallel, or slightly crossed, simple stamping.
Woodland into Early Mississippian.
At Nocoroco it is dated in St. Johns IIb or IIc times.
Northeastern Florida and presumably extreme southeastern Georgia.
Griffin and Smith 1949:346-348.
Goggin 1952:104-105.