• The
Arcadia Formation is the lower carbonate layer of the Hawthorn Group in southern Florida. • The
Tampa Member is the lowest level of the Arcadia Formation in the
Tampa Bay area. It is distinguished from other parts of the Arcadia Formation by the low percentage of phosphate present. • The
Nocatee Member is the lowest part of the Arcadia Formation in southwestern Florida. It is primarily
siliciclastic, while the rest of the Arcadia Formation is primarily
carbonate. • The
Coosawhatchie Formation is the top member of the Hawthorn Group in southeastern South Carolina and northeastern Georgia. • The
Charlton Member is the upper part of the Coosawatchie Formation in southern Georgia and northern Florida. • The
Marks Head Formation is the middle member of the Hawthorn Group in southeastern Georgia and northern Florida. • The
Parachucla Formation forms the lower part of the Hawthorn Group in southern Georgia. It grades into the Penney Farms Formation to the south. • The
Peace River Formation was proposed by Scott to include the
Bone Valley Formation, the
Murdock Station and Bayshore Clay members and other siliciclastic beds of the
Tamiami Formation. The Peace River Formation overlies the Arcadia Formation. • The
Penney Farms Formation is the lower part of the Hawthorn Group in northern and central Florida. • The
Statenville Formation is the top of the Hawthorn Group along the
Alapaha River near
Statenville, Georgia, extending into
Columbia and
Hamilton counties in Florida. • The
Torreya Formation is in the eastern part of the
Florida Panhandle and adjacent southwestern Georgia. It includes the
Dogtown and Sopchoppy members. The
Alachua Formation may have resulted from the weathering of Hawthorn Group sediments, intermixed with
Pliocene deposits. Scott does not consider it to be part of the Hawthorn Group. ==Paleofauna==