Mosasaurus hoffmannii is among the largest and latest known mosasaurids. Achieving a total body length of 14 m and exhibiting robust jaws lined with sharp, weakly prismatic teeth, M. hoffmannii would have fed at the apex trophic level of the Late Cretaceous marine ecosystem (Lingham-Soliar, 1995; Street and Caldwell, 2017). First discovered over 200 years ago in the upper Maastrichtian chalk quarries of St Pieter’s Mountain, south of Maastricht, the Netherlands, the species is reported from Campanian and Maastrichtian marine