Period: Neogene Epoch: Early Miocene Faunal stage: Aquitanian through early Messinian ~19–15.3 mya, calculates to a period of 3.7 million years The Torreya Formation is exposed or near the surface from Gadsden County, Florida on the west.

They are unconsolidated to poorly indurated (hard), slightly clayey sands with minor phosphate to light gray to bluish gray, poorly consolidated, variably silty clay (Dogtown Member).

The siliciclastics are sporadically fossiliferous and often contain oyster shells as found in the Seaboard Air Line Railroad site.

[2] The Torreya Formation overlies the Floridan aquifer and forms part of the intermediate confining unit/aquifer system.

(USGS) Barstovian land-mammal fauna found in northern Gadsden County dated 14.7–16.6 Ma.