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Arthopods (117) |
Coal balls (117) |
Cones (Botany) (117) |
Conifers, Fossil (117) |
Cordaites (117) |
Desmoinian North American Stage (Desmoinesian) (117) |
Geology, Strategraphic--Carboniferous (117) |
Geology, Stratigraphic--Pennsylvanian (117) |
Strobilus (116) |
Coal Ball Peels (105) |