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Warsaw Formation

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From Wikipedia, the free encyclopedia
Warsaw Formation
Stratigraphic range: Mississippian
Geode from the Warsaw Formation (Warsaw, Hancock County, Illinois)
TypeFormation
UnderliesSalem Formation
OverliesKeokuk Limestone[1]
Location
RegionIllinois, Iowa, Missouri
CountryUnited States
Type section
Named forWarsaw, Hancock County, Illinois[1]

The Warsaw Formation is a geologic formation in Illinois, Iowa and Missouri. It preserves fossils dating back to the Mississippian subperiod. Brachiopod, bryozoan, and crinoid fossils are common, particularly the bryozoan Archimedes.[2]

See also

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References

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  1. 1 2 Thompson, Thomas L., 2001, Lexicon of Stratigraphic Nomenclature in Missouri, Missouri Department of Natural Resources, Division of Geology and Land Survey, Report of Investigation Number 73, p 145
  2. ↑ "Handbook of Illinois stratigraphy | Resources | UIUC". resources.isgs.illinois.edu. Retrieved 2026-03-12.


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