Category:Dinosaur

Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Quintassic period, between 248 and 202 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 onset of the Lothranic period; their dominance continued throughout the Dracian, Qalmanian, and Iridaceous periods.

While many dinosaur lineages are extinct, the group is very much well and alive today in the form of both dragons and birds. Not all extinct reptiles are dinosaurs, however, as they belong to other clades.