This article contains a list of fossil-bearing stratigraphic units in the state of Wisconsin, U.S.
Sites Group or Formation Period Notes Black River Group/Platteville Formation Ordovician Black River Group/Platteville Limestone Ordovician Brandon Bridge Formation Silurian Byron Formation Silurian Decorah Formation Ordovician Decorah Shale Ordovician Dresbach Formation Cambrian Franconia Formation Cambrian Galena Formation Ordovician Galena Dolomite 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 Glenwood Formation Ordovician Grand Detour Formation Ordovician Guttenberg Formation Ordovician Ion Formation Ordovician Jordan Sandstone Cambrian Lake Church Formation Devonian Manistique Formation Silurian Maquoketa Formation Ordovician Maquoketa Group/Brainard Shale Formation Ordovician Maquoketa Group/Fort Atkinson Formation Ordovician Maquoketa Group/Fort Atkinson Limestone Ordovician Maquoketa Group/Neda Formation Ordovician Maquoketa Group/Scales Shale Formation Ordovician Mayville Formation Silurian Mifflin Formation Ordovician Milwaukee Formation Devonian Nachusa Formation Ordovician Oneota Formation Ordovician Pecatonica Formation Ordovician Platteville Formation Ordovician Platteville Group/Grand Detour Formation Ordovician Platteville Group/McGregor Formation Ordovician Platteville Group/Mifflin Formation Ordovician Platteville Group/Pecatonica Formation Ordovician Platteville Group/Quimbys Mill Formation Ordovician Potsdam Sandstone Cambrian Prairie du Chien Group Ordovician Quimbys Mill Formation Ordovician Racine Formation Silurian Racine Dolomite Silurian Spechts Ferry Formation Ordovician St. Peter Sandstone Ordovician Trempealeau Formation Cambrian Waukesha Formation Silurian Waukesha Dolomite Silurian
See also
Paleontology in Wisconsin
References