A diverse group of reptiles; the dominant terrestrial vertebrates for 135 million years, from the beginning of the Jurassic (about 200 million years ago) until the end of the Cretaceous (65.5 million years ago).
Diagram that shows how species are related to each other through common ancestors.
Type of early amniote that evolved during the Carboniferous Period; eventually gave rise to dinosaurs, reptiles, and birds.
Type of early amniote that evolved during the Carboniferous Period; eventually gave rise to mammals.
Evolution of sauropsids into available niches after the Permian mass extinction.