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From
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Geolocation
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Author - title
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Year
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| details | Middle Pennsylvanian | Kentucky | Dimichele,W.A. et al. Lycopods of Pennsylvanian age Coals | 1979 | |
| details | Middle Pennsylvanian | Indiana | Dimichele,W.A. et al. Lycopods of Pennsylvanian age Coals | 1979 |