The series consistently refers to Deinosuchus by its long-unused older scientific name "Phobosuchus".
Carnivorous dinosaurs are shown holding their arms like kangaroos. Studies made years prior to the show's production have shown that they were only capable of holding their hands with the palms facing inward, not downward.
The "raptor" dinosaurs are shown having very sparse feathering, even though it has been known since the early 2000s that they were fully coated in feathers.
Sauropods are depicted with their nostrils on the top of their forehead, when in reality, they were situated farther down, on the tip of their nose. This has already been known when this show was made.
The documentary claims that the giant fish Dunkleosteus weighed 20,000 tons. It weighed only about 3 tons in real life. The show's estimate is probably a typo.
Many animals are inaccurately misplaced in time. The program depicting the mass extinction at the end of the Cretaceous period focuses partially on Velociraptor and Protoceratops, however these have gone extinct 10 million years before the event. Elasmotherium has gone extinct roughly 50 thousand years before the Toba volcano explosion. Also, Staurikosaurus has also been extinct for about 20 million years before the start of the Jurassic period.