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