Dinosauria

Translingual

Various skeletons of extinct Dinosaurians.

From Ancient Greek δεινός (deinós, “terrible, horrible, fearful, astounding”) + σαῦρος (saûros, “lizard”) (“fearful lizard”, Owen, 1841/1842).

Dinosauria

A taxonomic superorder within the division Archosauria – true dinosaurs, including modern birds; a clade of ornithodiran archosaurian diapsid reptilians, distinguished by their hip bones, erect hind limbs and shorter forearms, and differentiated from the pterosaurs and other dinosauromorphs. First appearing in the Triassic, they became a polymorphic and widespread group, but only the avian line avoided extinction at the end of the Cretaceous.

(superorder): Eukaryota – superkingdom; Animalia – kingdom; Bilateria – subkingdom; Deuterostomia – infrakingdom; Chordata – phylum; Vertebrata – subphylum; Gnathostomata – infraphylum; Tetrapoda – superclass; Reptilia – class; Eureptilia, Romeriida - clades; Diapsida - subclass; Archosauromorpha - infraclass; Archosauria - division; Ornithodira - subsection

(superorder): Saurischia, †Sauropodomorpha, †Ornithischia - orders
- Theropoda - extant suborder

dinosaur (“member of Dinosauria”, noun)
Dinosaurian or dinosaurian (“pertaining to, member of Dinosauria”, adj. or noun)

Dinosauria on Wikipedia.Wikipedia
Dinosauria on Wikispecies.Wikispecies
Category:Dinosauria on Wikimedia Commons.Wikimedia Commons
Richard Owen, “Report on British Fossil Reptiles. Part II”, Report of the British Association for the Advancement of Science for 1841, London: 1841, p. 103.
- p. 189f.:
  The following are the names of the species of extinct Reptiles in the order in which they are described in the second and concluding part of the Report:—
  [...]
  Order DINOSAURIA.
  Megalosaurus Bucklandi, Cuvier.
  Hylæosaurus armatus, Mantell.
  Iguanodon Mantelli, Cuvier.
Thomas R. Holtz Jr., “Classification and Evolution of the Dinosaur Groups”, Scientific American Book of Dinosaurs, 2000.