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Arthopods (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) |
Mature Cone (1) |