Dewey Formation

Dewey Formation
Dewey Formation
Stratigraphic range: Carboniferous
Type	Formation
Lithology
Primary	Limestone
Location
Region	Iowa, Oklahoma
Country	United States
Type section
Named for	Dewey, Washington County, Oklahoma
Named by	D. W. Ohern, 1910

Last updated September 21, 2025

The Dewey Formation is a geologic formation in Iowa and Oklahoma. It preserves fossils dating back to the Carboniferous period.

References

↑ Ohern, D. W. (1 December 1910). "The stratigraphy of the older Pennsylvanian rocks of northeastern Oklahoma". The State University of Oklahoma Research Bulletin. 4: 30–37. Retrieved 2 August 2018.

Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database" . Retrieved 17 December 2021.

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[1] Ohern, D. W. (1 December 1910). "The stratigraphy of the older Pennsylvanian rocks of northeastern Oklahoma". The State University of Oklahoma Research Bulletin. 4: 30–37. Retrieved 2 August 2018.

[1]

Dewey Formation

See also

References