What Is A Stegosaurus?

Stegosaurus (/ˌstɛɡəˈsɔːrəs/[1]), from Greek stegos (στέγος), which means roof, and sauros (σαῦρος), which means lizard, is a genus of herbivorous thyreophoran dinosaur. Fossils of this genus date to the Late Jurassic period, where they are found in Kimmeridgian to early Tithonian aged strata, between 155 and 150 million years ago, in the western United States and Portugal. Of the species that have been classified in the upper Morrison Formation of the western US, only three are universally recognized; S. stenops, S. ungulatus and S. sulcatus.

Types of Stegosaurs

Stegosaurus ungulatus. North America

Stegosaurus armatus. Utah

  • Stegosaurus ungulatus Marsh, 1879
  • Stegosaurus sulcatus Marsh, 1887
Kingdom:Animalia
Phylum:Chordata
Clade:Dinosauria
Order:Ornithischia
Suborder:Stegosauria
Family:Stegosauridae
Subfamily:Stegosaurinae
Genus:Stegosaurus
Marsh, 1877
  • Hypsirhophus Cope, 1879
  • Diracodon Marsh, 1881

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