According geologinesia.com dinosaurs first appeared in the Triassic period, and were the dominant vertebrate animals for 135 million years, which began from the Jurassic period (around 201 million years ago) until the end of the Cretaceous period (65 million years ago), and later destroyed due to the event of the extinction of the Paleogene before the Mesozoic Era. In this film many describe things that are not in accordance with that era. There are still many things that need to be corrected so that this film shows more of the real situation at that time.