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Geolocation
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Author - title
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Year
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| details | Maastrichtian | Danian | Spain | De Coninck,J. et al. Marine organic-walled microfossils at the Cretaceous - Tertiary Boundary in the Barranco del Gredero, (southest Spain). | 1982 |
| details | Middle Miocene | Holocene | Caribbean | Stover,L.E. et al. Analyses of pre-Pleistocene organic-walled dinoflagellates. | 1978 |