Stegosaurusis a genus of armoredstegosauriddinosaur. They lived during the Late Jurassicperiod 150 million years ago in what is now western North America. In 2006, a specimen of Stegosaurus was announced from Portugal, showing that they were present in Europe as well. Due to its distinctive tail spikes and plates, Stegosaurusis one of the most recognizable dinosaurs. Stegosaurusgrew up to 9 meters (30 ft) in length. Some form of armor appears to have been necessary, as Stegosaurusspecies coexisted with large predatory theropod dinosaurs, such as Allosaurusand Ceratosaurus.
In the late Jurassic segment, Stegosaurus is first seen digging for water like a modern elephant but fails. Later, a male Stegosaurus meets a female and tries to show off. Then a Ceratosaurus comes out of nowhere but the male's tail spikes hurts the predator. He tries to mate with the female but she rejects him. Eventually, the female decides that he is a healthy individual and the two mate.