J.W.M. Jagt, H.W. Oosterink. The echinoid Holaster laevis from the Albian (Lower Cretaceous) of the Winterswijk area, eastern Netherlands. njg [Internet]. 2010Dec.1 [cited 2026Mar.26];89:239 - 241. Available from: https://njgjournal.nl/index.php/njg/article/view/12034