Director: Kevin Connor
Director of photography: Alan Hume
Production Design: Maurice Carter
Dinosaurs effects by: Roger Dicken
Special effects supervisor: Derek Meddings
Process photography: Charles Staffell
Matte paintings: Ray Caple
Roger Dicken was in charge of the hand puppet miniature dinosaurs.
John Richardson was responsible for the full size dinosaur heads attacking the submarine.
Miniatures
Matte paintings.