K. Gürs, A.W. Janssen. Sea-level related molluscan plankton events (Gastropoda, Euthecosomata) during the Rupelian (Early Oligocene) of the North Sea Basin. njg [Internet]. 2004Sep.1 [cited 2026Mar.30];83:199 - 208. Available from: https://njgjournal.nl/index.php/njg/article/view/11563