According to The Illustrated Dinosaur Movie Guide: "Proposed epic-scale production to tell the entire story of life on Earth, from the creation of the stars through the birth of Man. Completed footage includes a sequence of a brontosaurus on a beach being menaced by an allosaurus, plus scenes featuring a triceratops, a dimetroden and other dinosaurs. Shot on 16mm by twenty year-old Ray Harryhausen after his first meeting with Willis O’Brien."