Mosasaur
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Mosasaurs are an extinct group of large aquatic reptiles within the family Mosasauridae that lived during the Late Cretaceous. Their first fossil remains were discovered in a limestone quarry at Maastricht on the Meuse in 1764. They belong to the order Squamata, which includes lizards and snakes.
Fossil shell of ammonite Placenticeras whitfieldi showing punctures caused by the bite of a mosasaur, Peabody Museum of Natural History, Yale
A tooth from a mosasaur
Scales of Tylosaurus proriger (KUVP-1075)
Fibrous tissues and microstructures recovered from Prognathodon specimen IRSNB 1624
Meuse
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The Meuse or Maas is a major European river, rising in France and flowing through Belgium and the Netherlands before draining into the North Sea from the Rhine–Meuse–Scheldt delta. It has a total length of 925 km.
The Meuse at Dinant
Auguste Paul Charles Anastasi, Bank of the Meuse at Zwindrecht (Holland), c. 1857, lithograph, Department of Image Collections, National Gallery of Art Library, Washington, DC
The Meuse seen from SPOT satellite. The village in the lower right of the photo is Bogny-sur-Meuse; the village in the upper left is Revin.
A view of the Meuse in the French Ardennes at Laifour