Brainard Shale

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

Brainard Shale
Stratigraphic range: Ordovician
TypeFormation
Unit ofMaquoketa Group
UnderliesBrassfield Limestone, Cataract Formation, and Sexton Creek Limestone
OverliesFort Atkinson Limestone
Location
RegionIllinois, Indiana
CountryUnited States

See also

References

    • Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 31 July 2014. Retrieved 22 June 2014.


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