Lost Continent

Lost Continent is a 1951 American black-and-white science fiction film from Lippert Pictures, produced by Jack Leewood, Robert L. Lippert and Sigmund Neufield, directed by Sam Newfield, and starring Cesar Romero, Hillary Brooke, Chick Chandler, Sid Melton, Hugh Beaumont and John Hoyt. An expedition is sent to the South Pacific to search for a missing atomic-powered rocket in order to retrieve the vital scientific data recorded aboard. On an uncharted island, they discover more than their rocket, now crashed atop a mysterious plateau: they find a lost jungle world populated by prehistoric dinosaurs.