Find out what fossils have revealed about ichthyosaurs, which included the biggest marine reptile that ever lived.

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A massive jawbone ...

A newly identified ichthyosaur from the UK’s Jurassic Coast is rewriting part of the prehistoric playbook. Nicknamed the “Sword Dragon of Dorset,” the three-meter-long marine reptile lived during a ...

A chance glance at a museum display has led to the first-ever discovery of an ichthyosaur fossil in western Japan, dating back around 220 million years. Initially mistaken for a common bivalve fossil, ...

An extraordinary discovery has taken the paleontological world by storm: the first-ever preservation of soft tissues from a giant ichthyosaur. A remarkable fossil, dating back 183 million years, ...