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Arthopods (116) |
Coal balls (116) |
Cones (Botany) (116) |
Conifers, Fossil (116) |
Cordaites (116) |
Desmoinian North American Stage (Desmoinesian) (116) |
Geology, Strategraphic--Carboniferous (116) |
Geology, Stratigraphic--Pennsylvanian (116) |
Strobilus (116) |
Coal Ball Peels (104) |