Miedema Feiko, Schulp Anne S., Jagt John W.M., and Mulder Eric W.A. “New Plesiosaurid Material from the Maastrichtian Type Area, the Netherlands”. Netherlands Journal of Geosciences 98 (June 17, 2019). Accessed February 22, 2025. https://njgjournal.nl/index.php/njg/article/view/11638.