Goniosaurus is an extinct genus of plesiosaur from the Late Cretaceous (Maastrichtian age) of the Nekum Chalk, in the Netherlands. The only species so far described, G. binskhorsti is represented only by an isolated, compressed and slender tooth described by Hermman Meyer[1] and a referred tooth[2] and a cervical vertebra[3] that shows that was an elasmosaurid, as many others Late Cretaceous plesiosaurs from Europe.[4]
^Meyer, H., 1860. Saurier aus der Tuff Kreide von Maestricht und Folx-les-Caves. Palaeontographica, 7: 241-244.
^Mulder, E. W. A., 1990. Ein Elasmosaurierzähn aus der oberen Kreide des St. Pietersberges bei Maastricht, Süd-Limburg, Niederlande. Paläontologische Zeitschrift, 64 (1-2): 145-151.
^Mulder, E. W. A., 1985. Plesiosauriërs in de Limburgse Krijtzee. Natuurhistorisch Maandblad, 74 (5): 94-96.