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From ILSTRAT
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Search:Paleozoic Erathem
Revision as of 15:02, 30 March 2020 by
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Paleozoic Erathem
Cambrian System
Carboniferous System
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Sauk Sequence
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Ironton Sandstone
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Dresbachian Stage
Galesville Sandstone
Eau Claire Formation
Proviso Siltstone Member
Lombard Dolomite Member
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Mt. Simon Sandstone
Charter Member
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