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(Reguidit frae Dinosauria)

Temporal range: Late TriassicPresent, 233.23 – 0 Mya
(Possible Middle Triassic record)
A collection o fossil dinosaur skeletons. Clockwise frae tap left: Microraptor gui (a winged theropod), Apatosaurus louisae (a giant sauropod), Stegosaurus stenops (a platit stegosaur), Triceratops horridus (a horned ceratopsian), Edmontosaurus regalis (a duck-billed ornithopod), Gastonia burgei (an armored ankylosaur).
Scientific classification e
Kinrick: Animalia
Phylum: Chordata
Clade: Dracohors
Clade: Dinosauria
Owen, 1842
Major groups

Dinosaurs are a diverse group o reptiles o the clade Dinosauria.