In Pellucidar, Tarzan is attacked by a pack of two velociraptors and flees away by swinging on vines. However, the Sharpteeth pursue him and one of them manages to cut his vine, making him fall on the Triceratops. The herbivore scares away the Velociraptors, then it attacks Tarzan who flees toward his friends. Seeing the Triceratops pursuing Tarzan, Jane gets the idea to ignite methane gas to stop it. Tarzan manages to lure the dinosaur to the gas pits and Jane ignite the gas with his flashlight, causing a jet of flames which scares away the Triceratops.