Santee Limestone Formation - The Santee Limestone Formation (Green Cap Formation) is well known for shark teeth that are well preserved and possess excellent color. The Santee Limestone Formation is exposed in several quarries in the Harleyville area of Dorchester County. These teeth are from the Eocene (38 million years ago). The exceptional quality shark teeth from this area are very scarce. One of my favorite locations for exceptional quality Eocene teeth!