Dubuque Formation

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

Dubuque Formation
Stratigraphic range: Ordovician
TypeFormation
UnderliesMaquoketa Formation
OverliesGalena Group
Location
CountryUnited States
ExtentIllinois and Minnesota

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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