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Geolocation
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Author - title
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Year
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| details | Paleogene | China(Hupei) | Wang,K.F. et al. Palynological assemblages of the crude oil from the Buried Hills of China and the research of the oil source | 1985 | |
| original | Oligocene | China(Hopei) | Jiabo On the Paleogene dinoflagellates and acritarchs from the Coastal Region of Bohai. | 1978 |