A large-scale genome study shows that Indigenous peoples in the Americas split off several times, resulting in loss of important genetic diversity.

Fifty-six million years ago, during the Paleocene-Eocene Thermal Maximum (PETM), global temperatures rose by more than 5°C ...

Scientists have now discovered the oldest ancestor for all the Australian tree frogs, with distant links to the tree frogs of South America.

The origin of reptiles on Earth has been shown to be up to 40 million years earlier than previously thought -- thanks to evidence discovered at an Australian fossil site that represents a critical ...

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

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