Williamsburg Formation

Williamsburg Formation Stratigraphic range: Thanetian (Clarkforkian) ~58–55 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
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 / 33.7; -79.8Coordinates: 33°42′N 79°48′W / 33.7°N 79.8°W / 33.7; -79.8
Approximate paleocoordinates	34°48′N 62°36′W / 34.8°N 62.6°W / 34.8; -62.6
Region	South Carolina
Country	United States
Type section
Named for	Williamsburg County, South Carolina

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.

Fossil content[]

The following fossils were reported from the formation:^[1]

Mammals[]

• Ectoganus gliriformis
• E. lobdelli

Reptiles[]

• Osteopygis emarginatus
• Adocus sp.
• ?Bothremys sp.
• Chelonioidea indet.
• Cheloniidae indet.
• Pelomedusoides indet.

Crocodylians

• Bottosaurus sp.
• Hyposaurus sp.
• Thoracosaurus sp.
• Eusuchia indet.

Snakes

• Palaeophis sp.

See also[]

• List of fossiliferous stratigraphic units in South Carolina
• Paleontology in South Carolina

References[]

Bibliography[]

• Sawyer, 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. 47–67. Accessed 2018-06-26.