What I like about this film was that it was once a lost film, but now it was found in 2015, except that there happens to be some footage missing. This film has the eras. Paleozoic, Mesozoic, and Cenozoic. Expect creatures like trilobites, dimetrodon (here called Masosaurus), dinosaurs, and ice-age mammals like Woolly Mammoth and Woolly Rhinoceros. The models like kind of crude compared to the models used in THE LOST WORLD. This film was made in 1924 and was from Germany. It came to the U.S. a year later, just a few months after the release of the original 1925 film, THE LOST WORLD. I guess the American distributors want to cash-in on the success of the film. Give it a watch, hey the kiddies won't mind.