Ceratosaurus

Genus of theropod dinosaur from the Late Jurassic period

Ceratosaurus (from Greek κέρας / κέρατος keras / keratos 'horn' and σαῦρος sauros 'lizard') is a genus of carnivorous theropod dinosaur that lived during the Late Jurassic period (around 155 m.y.a) in North America and Europe. The genus was first described in 1884 by American paleontologist Othniel Charles Marsh based on a nearly complete skeleton discovered in Garden Park, Colorado, in rocks belonging to the Morrison Formation. The type species is Ceratosaurus nasicornis.

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