Williamsburg Formation
Stratigraphic range: Thanetian (Clarkforkian)
~58–55 Ma

PreЄ

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; -79.8
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.

## Contents

* 1 Fossil content
* 1.1 Mammals
* 1.2 Reptiles
* 2 See also
* 3 References
* 3.1 Bibliography

## Fossil content

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

### Mammals

* Ectoganus gliriformis
* E. lobdelli
* Mingotherium holtae

### Reptiles

* Agomphus pectoralis
* A. aff. alabamensis
* Osteopygis emarginatus
* Trionyx virginiana
* Adocus sp.
* ?Bothremys sp.
* Chelonioidea indet.
* Cheloniidae indet.
* Pelomedusoides indet.
* Taphrosphyini indet.
* Toxochelyinae 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

1. ↑ 1.0 1.1 Williamsburg Formation at Fossilworks.org

### Bibliography

* Sawyer, G. T (1998), "Coprolites of the Black Mingo Group (Paleocene) of the South Carolina", Transactions of the American Philosophical Society 88 (4): 221–228, doi:10.2307/1006676
* 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 (4): 229–245, doi:10.2307/1006677
* 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; Colquhoun, Donald (1982), "The Paleocene-lower Eocene Black Mingo Group of the east-central coastal plain of South Carolina", South Carolina Geology 26 (2): 47–67, https://www.researchgate.net/publication/314162569, retrieved 2018-06-26

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