Woodbury Formation

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Woodbury Formation
Stratigraphic range: Early Campanian, 80.5–78.5 Ma
TypeGeological formation
UnderliesEnglishtown Formation
OverliesMerchantville Formation
Thickness15 m
PrimaryClay, Silt
Region New Jersey
CountryUnited 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]

See also[edit]


  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.