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Evidence for Givetian stage in the Mauritanian Adrar (West Africa): biostratigraphical data and palaeogeographic implications. Newsletters on Stratigraphy, 38, 141–162
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Un assemblage microfaunistique remarquable du Paléozoïque supérieur de Turquie (radiolaires, conodontes, ostracodes, foraminifères, microrestes de vertébrés). Geobios, Memoire Special, 20, 109–115