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Geolocation
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Author - title
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Year
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| details | Danian | Late Ypresian | Virginia | Gibson,T.G. et al. Biostratigraphy of the Tertiary strata of the core. | 1980 |
| details | Danian | Ypresian | Virginia | Frederiksen,N.O. Rates of floral turnover and diversity change in the fossil record. | 1991 |