Dinosaurus!

A ‘B’ creature feature from 1960, 'Dinosaurus!' was the "Jurassic Park" of its day, featuring stop-motion and miniature special effects mixed with puppetry. The film tells the story of an American engineering team that accidentally unleashes prehistoric creatures - a Brontosaurus, a Tyrannosaurus rex, and a caveman - on a Caribbean island after undersea explosions near the island.