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Geolocation
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Author - title
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| details | Late Oligocene | Early Miocene | Hungary | Kedves,M. et al. Comparison of the spores of the genus Cicatricosisporites, R.Pot. and Gell., 1933, of Hungary and Colombia. Some problems referring to their stratigraphic significance. | 1963 |
| original | Late Oligocene | Early Miocene | E.Germany(Potsdam) | Krutzsch,W. Contribution to the spore-paleontology of the Pre-Upper Oligocene-Oligocene Continental and marine Tertiary sediments of Branden. | 1961 |