Fossilized claw tracks discovered in Australia show that the animal group that includes reptiles, mammals and birds formed ...

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 ...

The footprints of a reptile-like creature appear to have been laid down around 356 million years ago, pushing back the ...

A report in the journal Nature estimates that the amniote tracks date to between 350 million and 359 million years ago.

Tracks in Australia seem to be the earliest known prints of amniotes — a group that includes reptiles, birds and mammals.