| 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 | Maestrichtian | Mexico(Coahuila) | Rueda-Gaxiola,J. Contribution to the palynologic and petrographic study of the Cretaceous Coal of the Sabina Basin, Coahuila, Mexico | 1967 | |
| details | Westphalian B | W.Germany(N.Rhine) | Potonie,R. et al. The genera of Paleozoic sporae dispersae and their stratigraphy. | 1954 |