The Saurolophus is a modified model of the Anatotitan from the original series. They even have the same skin pattern.
The pterosaurs flying around in several scenes aren't identified. According to BBC's website, they are Azhdarcho.
Mononykus is the only non-avian dinosaur in the series to be correctly shown with feathers, even though other dinosaurs appearing in the program, like Velociraptor, were also known to have been feathered.
Though depicted here as a forest-dwelling daytime pack hunter, modern thinking suggests that Velociraptor was actually at home in the desert and was probably nocturnal, as well as a solitary hunter. At least, there is no evidence that it hunted in packs.
Although Tarbosaurus is nearly indistinguishable from its more famous relative, Tyrannosaurus rex, to the point where some scientists consider it another species of Tyrannosaurus, the animal in this episode looks completely different from the show's T. rex design, and is far more accurate.