Several sets of mosasaur remains, which had been discovered earlier at Maastricht but were not identified as mosasaurs until the 19th century, have been on display in the Teylers Museum, Haarlem, procured from 1790.
Varios xogos de restos de mosasauro que foran descubertos previamente en Maastricht pero que non foran identificados como tales até o século XIX, foron postos en exhibición no Museo Teylers, Haarlem, adquiridos desde 1790.