List of fossiliferous stratigraphic units in Washington, D.C.

Group or Formation	Period	Notes
Arundel Clay	Cretaceous

References

Wikisource has original works on the topic: Paleontology in the United States#Washington, D.C.

Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 22 June 2014.

Lists of fossiliferous stratigraphic units in the United States
States	Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming
Federal district	Washington, D.C.
Insular areas	American Samoa The Marianas Guam Northern Mariana Islands Puerto Rico U.S. Virgin Islands

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