Davis Formation
Stratigraphic range: Upper Cambrian
Ocnerorthis monticola, fossil from the Davis Formation in Missouri
Type	Formation
Unit of	Elvins Group (in Missouri)[1] and Munising Group (in Indiana)
Underlies	Derby-Doerun Dolomite and Potosi Dolomite
Overlies	Bonneterre Formation
Thickness	170 ft. average, 225 ft. maximum[2]
Lithology
Primary	Shale, Siltstone
Other	Sandstone, dolomite, limestone conglomerate[2]
Location
Country	United States
Extent	Illinois, Indiana, Minnesota, and Missouri
Type section
Named for	Outcrops along Davis Creek, St. Francois County, Missouri

The Davis Formation is a geologic formation in Indiana and Missouri. It preserves fossils dating back to the Cambrian period.

See also

• List of fossiliferous stratigraphic units in Indiana
• List of fossiliferous stratigraphic units in Missouri

References

Sources

• Kleeschulte, Michael J.; Seeger, Cheryl M. (2003). "Davis Formation". Water-resources Investigations Report. US Geological Survey. pp. 11–15. Retrieved 2024-08-22.
• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 25 March 2022. Retrieved 17 December 2021.

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