Dinosaur

Dinosaurs are a diverse prehistoric group of reptiles of the clade Dinosauria.   The fossil  record demonstrates that birds are modern feathered dinosaurs, having evolved  from earlier theropods during the Late Jurassic epoch. As such, birds were the only dinosaur lineage to survive the Cretaceous–Paleogene extinction event  approximately 66 million years ago. Dinosaurs can therefore be divided into avian dinosaurs, or birds; and non-avian dinosaurs, which are all dinosaurs other than birds.

Source : Pixabay

Kingdom

Amilia

They first appeared during the Triassic period, between 243 and 233.23 million years ago, although the exact origin and timing of the evolution of dinosaurs is the subject of active research. They became the dominant terrestrial vertebrates after the Triassic–Jurassic extinction event about 201.3 million years ago; their dominance continued through the Jurassic and Cretaceous periods.