Spinosaurus, the large predator made famous by the films Jurassic Park III and Planet Dinosaur, was a huge river monster, as demonstrated beyond a reasonable doubt by a team of researchers from the University of Portsmouth who discovered more than a thousand dinosaur teeth. Research published today in the journal Cretaceous Research proves that Spinosaurus aegyptiacus, a 15 metre long, six-tonne beast was in fact the most commonly found creature in the Kem Kem river system, which flowed through the Sahara Desert 100 million years ago. Until recently it was believed that dinosaurs lived exclusively on land. However, research published earlier this…