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Arthopods (145) |
Coal balls (145) |
Cones (Botany) (145) |
Conifers, Fossil (145) |
Cordaites (145) |
Desmoinian North American Stage (Desmoinesian) (145) |
Geology, Strategraphic--Carboniferous (145) |
Geology, Stratigraphic--Pennsylvanian (145) |
Strobilus (144) |
Coal Ball Peels (133) |