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Showing below up to 20 results in range #41 to #60.
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- Decorah Subgroup
- Desmoinesian Series
- Devonian System
- Dolomite
- Dresbachian Stage
- Dunleith Formation
- Dutchtown Limestone
- Eau Claire Formation
- Edenian Stage
- Edgewood Formation
- Elviran Stage
- Elwood Formation
- Embayment Megagroup
- Eminence Formation
- Enion Formation
- Eocene Series
- Equality Formation
- Fraileys Shale
- Franconia Formation
- Franconian Stage