Siats /see-ats/ is an extinct genus of large neovenatorid dinosaur known from the Late Cretaceous Cedar Mountain Formation of Utah, United States. It contains a single species, Siats meekerorum.
In 1862, an American explorer and his son are shipwrecked and washed upon a mysterious island. Soon they discover that this island is the home of generations of humans and dinosaurs living together in a peaceful and fantastic civilization called Dinotopia. Based on the books by James Gurney.