Brainard Shale

Brainard Shale
Brainard Shale
Stratigraphic range: Ordovician
Type	Formation
Unit of	Maquoketa Group
Underlies	Brassfield Limestone, Cataract Formation, and Sexton Creek Limestone
Overlies	Fort Atkinson Limestone
Location
Region	Illinois, Indiana
Country	United States

Last updated July 04, 2025

The Brainard Shale is a geologic formation in Illinois. It preserves fossils dating back to the Ordovician period.

References

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

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Brainard Shale

See also

References