sentences:  Further films by Hammer which traded heavily on the appeal of scantily clad cave girls were "When Dinosaurs Ruled the Earth" (1970) and "Creatures the World Forgot" (1971).Shooting took place from 10 January to 22 February 1966.According to Fox records, the double bill of the film and "Devils" needed to earn $1,450,000 in rentals to break even and made $1,265,000, meaning they made a loss.