| Yellow Springs Group | |
|---|---|
| Stratigraphic range: Devonian | |
| Type | Group |
| Location | |
| Region | Iowa |
| Country | United States |
The Yellow Springs Group is a geologic group in Iowa. It preserves fossils dating back to the Devonian period.
The Cedar Valley Group is a geologic group in Iowa and Illinois. It preserves fossils dating back to the Devonian period.
The Chouteau Limestone is a geologic formation in Illinois, Iowa, Kansas, and Missouri. It preserves fossils dating back to the Carboniferous period.
The Warsaw Formation is a geologic formation in Illinois, Iowa and Missouri. It preserves fossils dating back to the Mississippian subperiod.
The Cherokee Group is a Pennsylvanian geologic group in Missouri and Iowa. The group contains most of the economic coal deposits of Missouri and Iowa.
The Shawnee Group is a geologic group in Iowa. It preserves fossils dating back to the Carboniferous period.
The Dewey Formation is a geologic formation in Iowa and Oklahoma. It preserves fossils dating back to the Carboniferous period.
The Hampton Formation is a geologic formation in Iowa. It preserves fossils dating back to the Carboniferous period.
The Pella Formation is a geologic formation in Iowa. It preserves fossils dating back to the Carboniferous period.
The Kanwaka Formation is a geologic formation in Iowa. It preserves fossils dating back to the Carboniferous period.
The St. Louis Formation is a geologic formation in Iowa. It preserves fossils dating back to the Carboniferous period.
The Coralville Formation is a geologic formation in Iowa. It preserves fossils dating back to the Devonian period.
The Lithograph City Formation is a geologic formation in Iowa, part of the Cedar Valley Group. It preserves fossils dating back to the Devonian period. The formation is composed of dolomite and limestone, with many fossils and vugs in the lower part, while the upper part contains few fossils.
The Spillville Formation is a geologic formation in Iowa. It preserves fossils dating back to the Devonian period.
The North Hill Group is a geologic formation in Iowa. It preserves fossils dating back to the Devonian period.
The Hackberry Group is a geologic formation in Iowa. It preserves fossils dating back to the Devonian period.
The Stewartville Formation is a geologic formation in Iowa. It preserves fossils dating back to the Ordovician period.
The Cummingsville Formation is a geologic formation in Iowa and Minnesota. It preserves fossils dating back to the Ordovician period.
The Racine Formation is a geologic formation in Iowa. It preserves fossils dating back to the Silurian period.
The Lansing Group is a geologic group in Nebraska, Iowa, Missouri and Kansas. It preserves fossils dating back to the Carboniferous period.
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