Forget about scientific accuracy! That'll just get in the way of your having a jolly good time. This is a fantasy film, folks, and a splendid one it is. It was the union of director Don Chaffey, cinematographer Wilkie Cooper, visual effects master Ray Harryhausen, and music composer Mario Nascimbene--along with the eye candy of a handsome cast--that created create this very unique world. Don't let that live lizard at the start fool you, by the time you get to the small stop-motion allosaurus attacking the Shell People's village, you'll be transfixed.