| Woodbury Formation | |
|---|---|
| Stratigraphic range: Early Campanian, | |
| Type | Geological formation |
| Underlies | Englishtown Formation |
| Overlies | Merchantville Formation |
| Thickness | 15 m |
| Lithology | |
| Primary | Clay, Silt |
| Other | Sand |
| Location | |
| Region |  New Jersey |
| Country | United States |
The Woodbury Formation is a Mesozoic geologic formation in New Jersey, United States. It primarily consists of massive dark gray clays and silts with carbonized wood fragments and pyrite, deposited in a marine setting.
The remains of the dinosaur Hadrosaurus have been recovered from this formation.[1]
Using radio isotope dating of bivalve shells, the formation has been dated to between 80.5 and 78.5 million years ago.[2] However, a more accurate date make range from 83.6 to around 77.9 MYA.[3]
- ^ Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. ISBN 0-520-24209-2.
- ^ Gallagher, W.B. (2005). "Recent mosasaur discoveries from New Jersey and Delaware, USA: stratigraphy, taphonomy and implications for mosasaur extinction." Netherlands Journal of Geosciences, 84(3): 241.
- ^ Stringer, Gary L.; Oman, Luke D.; Badger, Robert F. (November 2016). "Woodbury Formation (Campanian) in New Jersey yields largest known Cretaceous otolith assemblage of teleostean fishes in North America". Proceedings of the Academy of Natural Sciences of Philadelphia. 165 (1): 15–36. doi:10.1635/053.165.0101. ISSN 0097-3157.