User:Wondergirl453

Ichthyosaurus [ik-thee-uh-sor'-uhs] Ichthyosaurus (greek:ichthys ,"fish";saurus,"lizard") was one of a large order of aquatic reptiles that inhabited the mesozoic oceans from mid-triassic time(about 210 million years ago) until late in the Cretaceous Period(65 million years ago) specimens have been found in lower jurassic rocks.