Cummingsville Formation

Cummingsville Formation Stratigraphic range: Ordovician
Cummingsville Formation in Decorah, Iowa. The Cummingsville is the brown upper unit; the Decorah Shale is below.
Type	Formation
Overlies	Decorah Shale
Location
Country	United States
Extent	Iowa and Minnesota

The Cummingsville Formation is a geologic formation in Iowa and Minnesota. It preserves fossils dating back to the Ordovician period.

See also[]

• List of fossiliferous stratigraphic units in Iowa
• Paleontology in Iowa

References[]

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021. {{cite web}}: |author= has generic name (help)

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