An extinct marine reptile of the order known as ichthyosauria (Greek ichthys
= fish, sauros = lizard) that lived from the Triassic
to the Cretaceous periods, dying out
about 90 million years ago. The ichthyosaurs were, predatory and appear
almost fish-like, with streamlined bodies, limbs modified as fins, and fish-like
tail. They gave birth to live young, an ability not found in most living
|An artist's reconstruction of ichthyosaurs.
Image credit: John Sibbick/NHMPL