A very beautiful highly detailed, (From Wikipedia, the free encyclopedia For other uses, see Dinosaur (disambiguation). Dinosaurs Temporal range: Late Triassic–Present, 233.23 – 0 Mya (Range includes birds (Aves)) Preccy (Possible Middle Triassic record) Dinosauria montage jpg A compilation of dinosaur skeletons. Clockwise from top left: Microraptor gui (a winged theropod), Apatosaurus louisae (a giant sauropod), Edmontosaurus regalis (a duck-billed ornithopod), Triceratops horridus (a horned ceratopsian), Stegosaurus stenops (a plated stegosaur), Pinacosaurus grangeri (an armored ankylosaur) Scientific classification e Kingdom: Animalia Phylum: Chordata Clade: Sauropsida Clade: Archosauria Clade: Avemetatarsalia Clade: Ornithodira Clade: Dinosauromorpha Clade: Dinosauriformes Clade: Dracohors Clade: Dinosauria Owen, 1842 Major groups Ornithischia Sauropodomorpha Theropoda Aves show Possible dinosaurs of uncertain affinity montage of four birds Birds are avian dinosaurs, and in phylogenetic taxonomy are included in the group Dinosauria. Dinosaurs are a diverse group of reptiles[note 1] of the clade Dinosauria. They first appeared during the Triassic period, between 245 and 233.23 million years ago (mya), although the exact origin an hybrids:1.3), by james jean and andree wallin, fantasy concept art, fantasy art, epic fantasy card game art, full art illustration, trending on Artstation | Fantasy