Watch Voyage to the Prehistoric Planet

A team of astronauts in 2020 have left the moon, which has been colonized, and ventured to Venus. This exploration is fraught with perils, and when they get there, they realize that they are surrounded by dinosaurs. This development takes them all by surprise, and it is all they can do to survive amidst these dangerous creatures until they can make their escape from this hostile planet and return to the moon.