| 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 Oligocene | Bulgaria | Chernyavska,S. Palynological studies on Paleogene deposits in South Bulgaria. | 1977 | |
| details | Late Oligocene | Bulgaria | Chernyavska,S. Palynological studies on Paleogene deposits in South Bulgaria. | 1977 |