گونیوسور

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. binkhorsti is represented only by an isolated, compressed and slender tooth described by Christian Erich Hermann von Meyer and a referred tooth and possibly two cervical vertebrae that shows that it was an elasmosaurid, as many other Late Cretaceous plesiosaurs from Europe. The generic name is derived from the Greek gonia, "angle", referring to the fact that the striations meets each other under an angle pointing to below, i.e.