List of fossiliferous stratigraphic units in Illinois

This article contains a list of fossil-bearing stratigraphic units in the state of Illinois, U.S.

Sites

Group or Formation Period Notes
Altamont FormationCarboniferous
Platteville LimestoneOrdovician
St. Louis LimestoneCarboniferous
Brainard FormationOrdovician
Carbondale FormationCarboniferous
Caseyville FormationCarboniferous
Cedar Valley FormationDevonian
Little Cedar FormationDevonian
Chester FormationCarboniferous
Hardinsburg FormationCarboniferous
Clore FormationCarboniferous
Tar Springs FormationCarboniferous
Chouteau FormationCarboniferous
Clayton FormationPaleogene
Decorah ShaleOrdovician
Degonia FormationCarboniferous
Des Moines FormationCarboniferous
Drurey ShaleCarboniferous
English River FormationCarboniferous
Fort Scott LimestoneCarboniferous
Fraileys FormationCarboniferous
Fraileys ShaleCarboniferous
Galena DolomiteOrdovician
Dubuque FormationOrdovician
Dunleith FormationOrdovician
Guttenberg FormationOrdovician
Ion FormationOrdovician
Wise Lake FormationOrdovician
Glen Park FormationCarboniferous
Glenwood FormationOrdovician
Golconda FormationCarboniferous
Golconda GroupCarboniferous
Haney FormationCarboniferous
Gower FormationSilurian
Grand Detour FormationOrdovician
Grand Tower LimestoneDevonian
Haney LimestoneCarboniferous
Iola FormationCarboniferous
Kansas City FormationCarboniferous
Keokuk LimestoneCarboniferous
Spoon FormationCarboniferous
Kimmswick LimestoneOrdovician
Kinkaid FormationCarboniferous
Linton FormationCarboniferous
Maquoketa FormationOrdovician
Brainard ShaleOrdovician
Fort Atkinson LimestoneOrdovician
Neda FormationOrdovician
Scales ShaleOrdovician
Mattoon FormationCarboniferous
McCraney LimestoneCarboniferous
Bond FormationCarboniferous
Patoka FormationCarboniferous
Shelburn FormationCarboniferous
McLeansbough FormationCarboniferous
Mifflin FormationOrdovician
Mosalem FormationSilurian
Nachusa FormationOrdovician
Glen Dean FormationCarboniferous
Orchard Creek ShaleOrdovician
Paint Creek FormationCarboniferous
Pawnee FormationCarboniferous
Pecatonica FormationOrdovician
McGregor FormationOrdovician
Prosser LimestoneOrdovician
Purington ShaleCarboniferous
Quimbys Mill FormationOrdovician
Racine DolomiteSilurian
Ridenhower FormationCarboniferous
Salem FormationCarboniferous
Shakopee FormationOrdovician
Spechts Ferry FormationOrdovician
St. Laurent FormationDevonian
St. Louis FormationCarboniferous
St. Peter SandstoneOrdovician
Ste. Genevieve LimestoneCarboniferous
Sturgis FormationCarboniferous
Sugar Run DolomiteSilurian
Tradewater FormationCarboniferous
Verdigris FormationCarboniferous
Waltersburg FormationCarboniferous
Warsaw FormationCarboniferous
Wilhelmi FormationSilurian

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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