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Coal balls (151) |
Cones (Botany) (151) |
Conifers, Fossil (151) |
Desmoinian North American Stage (Desmoinesian) (151) |
Geology, Strategraphic--Carboniferous (151) |
Geology, Stratigraphic--Pennsylvanian (151) |
Cordaites (146) |
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Strobilus (145) |
Coal Ball Peels (139) |