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Coal balls (68) |
Cones (Botany) (68) |
Conifers, Fossil (68) |
Cordaites (68) |
Desmoinian North American Stage (Desmoinesian) (68) |
Geology, Strategraphic--Carboniferous (68) |
Geology, Stratigraphic--Pennsylvanian (68) |
Mature Cone (68) |
Arthopods (67) |
Strobilus (67) |