Dinosaurs Temporal range: Late Triassic ? Present , 233.23 ? 0 Mya Pre? ? O S D C P T J K Pg N (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
Kinrick:	Animalia
Phylum:	Chordata
Clade :	Dracohors
Clade :	Dinosauria Owen , 1842
Major groups
† Ornithischia † Stegosauria † Ankylosauria † Ornithopoda † Ceratopsia Saurischia † Sauropodomorpha Theropoda

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

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