Dinosaurus!

Dinosaurus is a 1960 science fiction film directed by Irvin Yeaworth and produced by Jack H. Harris. The leading role was intended for Steve McQueen, who starred in The Blob two years earlier, also directed by Yeaworth Jr. But for reasons not clear, the offer was never made to McQueen.

Parts of the film were shot on location. Some location shooting took place on the Island of St. Croix, in the U.S. Virgin Islands. The dinosaurs were filmed using the technique of stopmotion animation as well as puppets for closeups.During specialeffects work on this picture, the crew used their Brontosaurus model and miniature jungle set to film a shot for an episode of TVs The Twilight Zone 1959, called The Odyssey of Flight 33. A shot of the Tyrannosaurus was borrowed as well for The Secret of Gilligans Island, a 3rd season episode of Gilligans Island where Gilligan dreams the castaways are all cavepeople living on the island back in the stone age. ........

Source: Wikipedia