link
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From
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To
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Geolocation
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Author - title
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Year
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details | Late Carboniferous | W.Germany(N.Rhine) | Potonie,R. et al. The genera of Paleozoic sporae dispersae and their stratigraphy. | 1954 | |
details | Middle Pennsylvanian | Late Pennsylvanian | Illinois | Knox,E.M. The spores of Lycopodium, Phylloglossum, Selaginella and Isoetes and their value in the study of microfossils of Paleozoic age. | 1950 |