Potosi Formation | |
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Stratigraphic range: Cambrian | |
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Fossil from the Potosi Dolomite
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Type | Formation |
Underlies | Eminence Dolomite and Oneota Dolomite |
Overlies | Davis Formation,[1] Derby-Doerun Dolomite,[2] and Franconia Formation |
Location | |
Coordinates | 38°05′30″N 90°41′07″W / 38.091733°N 90.685176°W / 38.091733; -90.685176 |
Region | Illinois, Indiana, Missouri |
Country | United States |
The Potosi Formation is a geologic formationinMissouri, Illinois and Indiana. It preserves fossils dating back to the Cambrian period.
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