Williamsburg Formation
The Williamsburg Formation is a geologic formation in South Carolina consisting of sandy shale and clayey sand. It is a member of the Black Mingo Group and overlays the Rhems Formation. It preserves fossils, among others coprolites, dating back to the Paleogene period.
Fossil content
The following fossils were reported from the formation:Mammals
Ectoganus gliriformisE. lobdelli- ''Mingotherium holtae''
Reptiles
Agomphus pectoralisA. aff. alabamensisOsteopygis emarginatusTrionyx virginianaAdocus sp.?Bothremys sp.- Chelonioidea indet.
- Cheloniidae indet.
- Pelomedusoides indet.
- Taphrosphyini indet.
- Toxochelyinae indet.
;Snakes
- ''Palaeophis sp.''