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The Crescent Formation is a
geologic formation A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics ( lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exp ...
in
Washington (state) Washington (), officially the State of Washington, is a state in the Pacific Northwest region of the Western United States. Named for George Washington—the first U.S. president—the state was formed from the western part of the Washington ...
. It preserves
fossils A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in ...
dating back to the
Paleogene The Paleogene ( ; British English, also spelled Palaeogene or Palæogene; informally Lower Tertiary or Early Tertiary) is a geologic period, geologic period and system that spans 43 million years from the end of the Cretaceous Period million yea ...
period.


See also

*
List of fossiliferous stratigraphic units in Washington (state) This article contains a list of fossil-bearing stratigraphic units in the state of Washington, U.S. Sites See also * Paleontology in Washington (state) References * {{DEFAULTSORT:Fossiliferous stratigraphic units in Washington (state) ...
* Paleontology in Washington (state)


References

* Paleogene geology of Washington (state) Ypresian Stage Wasatchian {{Paleogene-stub