1.
Ypresian organic-walled phytoplankton in the Belgian Basin and adjacent areas
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Diachronism of the Deflandrea oebisfeldensis acme towards the southern margin of the Belgian Basin
Organic-walled phytoplankton biostratigraphy of the Eocene-Oligocene transition in the Kallo borehole and the Rupelian stratotype area (northwestern Belgium)
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5.
Phytoplancton à paroi organique et phases transgressives vers la transition Paléocène-Eocène dans la partie méridionale du Bassin de la Mer du Nord