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Geolocation
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Author - title
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Year
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| details | Late Oligocene | Japan(Kyushu I.) | Takahashi,K. Pollen and spores of the Miike and Asakura Coal Field and its Stratigaphical significance | 1958 | |
| details | Oligocene | Japan(Kyushu I.) | Takahashi,K. Pollen and spores of the Onga Formation in the Kokura Coalfield, north Kyushu. | 1957 | |
| details | Eocene | Miocene | Japan(Kyushu I.) | Takahashi,K. Stratigraphic palynological investigation of the Tertiary Layers in the Coalfield of Kasuya and Fukuoka, northern Kyushu, Japan | 1957 |