A 166-million-year-old reptile that lived during the time of the dinosaurs was believed to have swum in ancient lagoons, but ...

It was capable of growing beyond 30 feet in length and weighed around 10 tons—a mature elephant plus a sedan car.

Scientists in Australia have identified the oldest known fossil footprints of a reptile-like animal on a slab of sandstone ...

Fossil claw prints found in Australia were probably made by the earliest known members of the group that includes reptiles, birds and mammals, according to a study published in Nature today.

Before Texas was what it is known today, it was a vast sea full of marine reptiles. Now, one of those creatures has been found - its remains, that is - during construction work. St ...

In Chile's Torres del Paine National Park, the remarkably preserved remains of a pregnant ichthyosaur, nicknamed “Fiona,” ...

The creature could lay eggs on land, unlike amphibians. It was part of a large group known as “amniotes,” which would evolve ...

New fossilized tracks made by an ancient reptile indicate that these animals evolved tens of millions of years sooner than ...

Leard and Palmer are experienced scientists pursuing their doctoral degrees in earth and atmospheric sciences at MSU while ...

Learn what secrets this pregnant ichthyosaur reveals from the Early Cretaceous and why this find is so important.

John Long/The ConversationThe emergence of four-legged animals known as tetrapods was a key step in the evolution of many species today – including humans.Our new discovery, published today in Nature, ...