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| Arthopods (1) |
| Brown Coprolite (1) |
| Coal Ball Peels (1) |
| Coal balls (1) |
| Cones (Botany) (1) |
| Conifers, Fossil (1) |
| Cordaites (1) |
| Desmoinian North American Stage (Desmoinesian) (1) |
| Geology, Strategraphic--Carboniferous (1) |
| Geology, Stratigraphic--Pennsylvanian (1) |