Plesiosaurus houzeaui DOLLO, 1909 from the Upper Campanian of Ciply (Belgium) and a review of the Upper Cretaceous plesiosaurs from Europe

The holotype of Plesiosaurus houzeaui DOLLO, 1909 consists of plesiosaurian bones, discovered in the Spiennes Chalk (Upper Campanian) of the Ciply area (Mons Basin, Belgium). The description of the type material shows that Plesiosaurus houzeaui is an invalid species based on heterogeneous elasmosaurid and also probably non-elasmosaurid plesiosaurian material. A review of plesiosaurian material previously described from the Upper Cretaceous of Europe indicates that Elasmosauridae and Pliosauridae are represented. Polyptychodon is the only valid genus of plesiosaur from the Upper Cretaceous of E... Mehr ...