The Williamsburg Formation is a geologic formation in South Carolina consisting of sandy shale and clayey sand.[1] 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.
| Williamsburg Formation | |
|---|---|
| Stratigraphic range: Thanetian (Clarkforkian) ~ | |
| Type | Formation |
| Unit of | Black Mingo Group |
| Overlies | Rhems Formation |
| Lithology | |
| Primary | Sandstone |
| Other | Phosphorite |
| Location | |
| Coordinates | 33°42′N 79°48′W / 33.7°N 79.8°W |
| Approximate paleocoordinates | 34°48′N 62°36′W / 34.8°N 62.6°W |
| Region |  South Carolina |
| Country |  United States |
| Type section | |
| Named for | Williamsburg County, South Carolina |
Fossil content
editThe following fossils were reported from the formation:[1]
Mammals
editReptiles
edit- Agomphus pectoralis
- A. aff. alabamensis
- Osteopygis emarginatus
- Trionyx virginiana
- Adocus sp.
- ?Bothremys sp.
- Chelonioidea indet.
- Cheloniidae indet.
- Pelomedusoides indet.
- Taphrosphyini indet.
- Toxochelyinae indet.
- Crocodylians
- Snakes
See also
editReferences
edit- ^ a b Williamsburg Formation at Fossilworks.org
Bibliography
editSawyer, G. T. 1998. Coprolites of the Black Mingo Group (Paleocene) of the South Carolina. Transactions of the American Philosophical Society 88. 221–228. .
Schoch, R. M. 1998. Late Paleocene land-mammals from the Williamsburg Formation (Black Mingo Group) of South Carolina. Transactions of the American Philosophical Society 88. 229–245. .
Schoch, R. M. 1985. Preliminary description of a new late Paleocene land-mammal fauna from South Carolina, U.S.A.. Postilla 196. 1–13. .
Van Nieuwenhuise, Don, and Donald Colquhoun. 1982. The Paleocene-lower Eocene Black Mingo Group of the east-central coastal plain of South Carolina. South Carolina Geology 26(2). 47–67. Accessed 2018-06-26.