Woodbury Formation

Woodbury Formation
Stratigraphic range: Early Campanian, 83.6–77.9 Ma PreꞒ Ꞓ O S D C P T J K Pg N
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]

See also

• List of dinosaur-bearing rock formations
• List of stratigraphic units with few dinosaur genera

References

1. Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. ISBN 0-520-24209-2.
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.
3. 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.