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Coal balls (146) |
Cones (Botany) (146) |
Conifers, Fossil (146) |
Cordaites (146) |
Desmoinian North American Stage (Desmoinesian) (146) |
Geology, Strategraphic--Carboniferous (146) |
Geology, Stratigraphic--Pennsylvanian (146) |
Arthopods (145) |
Strobilus (145) |
Coal Ball Peels (134) |