List of fossiliferous stratigraphic units in Iowa

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

Sites

Group or Formation	Period	Notes
Altamont Formation	Carboniferous
Blanding Formation	Silurian
Brainard Formation	Ordovician
Bronson Group/Dennis Formation	Carboniferous
Burlington Limestone	Carboniferous
Cedar Valley Group/Coralville Formation	Devonian
Cedar Valley Group/Linwood Formation	Devonian
Cedar Valley Group/Lithograph City Formation	Devonian
Cedar Valley Group/Little Cedar Formation	Devonian
Cedar Valley Group/Shell Rock Formation	Devonian
Chapin Formation	Carboniferous
Cherokee Group	Carboniferous
Coralville Formation	Devonian
Dakota Formation	Cretaceous
Decorah Shale	Ordovician
Dennis Formation	Carboniferous
Dewey Formation	Carboniferous
Dunleith Formation	Ordovician
English River Formation	Carboniferous
Galena Dolomite	Ordovician
Galena Group/Cummingsville Formation	Ordovician
Galena Group/Decorah shale	Ordovician
Galena Group/Dubuque Formation	Ordovician
Galena Group/Dunleith Formation	Ordovician
Galena Group/Guttenberg Formation	Ordovician
Galena Group/Ion Formation	Ordovician
Galena Group/Spechts Ferry Formation	Ordovician
Galena Group/Wise Lake Formation	Ordovician
Gilmore City Limestone	Carboniferous
Glenwood Formation	Ordovician
Gower Formation	Silurian
Grand Detour Formation	Ordovician
Graneros Shale	Cretaceous
Guttenberg Formation	Ordovician
Hackberry Group/Lime Creek Formation	Devonian
Hampton Formation	Carboniferous
Hopkinton Dolomite	Silurian
Independence Shale	Devonian
Iola Formation	Carboniferous
Ion Formation	Ordovician
Kansas City Group/Swope Formation	Carboniferous
Keokuk Limestone	Carboniferous
LaPorte City Formation	Silurian
Lecompton Formation	Carboniferous
Lime Creek Formation	Devonian
Lost Branch Formation	Carboniferous
Maquoketa Group	Ordovician
Maquoketa Group/Brainard Shale	Ordovician
Maquoketa Group/Fort Atkinson Limestone	Ordovician
Maquoketa Group/Neda Formation	Ordovician
Maquoketa Group/Scales Shale	Ordovician
Marmaton Group/Labette	Carboniferous
Maynes Creek Formation	Carboniferous
McCraney Limestone	Carboniferous
Mifflin Formation	Ordovician
Mosalem Formation	Silurian
Nachusa Formation	Ordovician
North Hill Group/English River	Devonian
Oneota Formation	Ordovician
Pawnee Formation	Carboniferous
Pecatonica Formation	Ordovician
Pella Formation	Carboniferous
Platteville Group/Grand Detour Formation	Ordovician
Platteville Group/Mifflin Formation	Ordovician
Platteville Group/Pecatonica Formation	Ordovician
Platteville Group/Quimbys Mill Formation	Ordovician
Prosser Limestone	Ordovician
Quimbys Mill Formation	Ordovician
Racine Formation	Silurian
Saturday Mountain Formation	Ordovician
Scotch Grove Formation	Silurian
Shawnee Group/Deer Creek Limestone	Carboniferous
Shawnee Group/Kanwaka Formation	Carboniferous
Shawnee Group/Oread Limestone	Carboniferous
Shell Rock Formation	Devonian
Spechts Ferry Formation	Ordovician
Spillville Formation	Devonian
St. Louis Formation	Carboniferous
St. Peter Sandstone	Ordovician
Stanton Formation	Carboniferous
Stewartville Formation	Ordovician
Swope Formation	Carboniferous
Traverse Group/Cedar Valley Formation	Devonian
Wapsipinicon Formation	Devonian
Warsaw Formation	Carboniferous
Wassonville Formation	Carboniferous
Wise Lake Formation	Ordovician
Yellow Springs Group/Sheffield Formation	Devonian

See also

• Paleontology in Iowa

References

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.