The Late Triassic was full of animals that look almost familiar, right up until you place them on the evolutionary tree. One ...

Anewly described reptile from New Mexico is giving scientists a fresh look at the evolutionary experiments that unfolded ...

A newly identified ocean predator from prehistoric Texas is giving the name "T. rex" a whole new meaning. Scientists say a ...

There’s a newly crowned T. rex. This one, called Tylosaurus rex, was a tyrant of the sea and mosasaur spanning up to 43 feet ...

The origin of turtles has always been a bit of a puzzle for scientists who study the evolution of animals. To this day, where they fit in the tree of life remains a highly debated topic. The ...

Learn how a 260-million-year-old Permian reptile, once thought to explain turtle evolution, turned out to belong to a different lineage, reshaping the story of turtle origins in the Triassic Period.

The discovery of some bones at the edge of a pond in Thailand a decade ago has led to the identification of a new type of dinosaur, with a massive size, long neck and tail, and a plant diet.