Fossilized footprints of a primitive reptile found on a slab of rock from Australia could rewrite the story of how animals ...

A single track-bearing slab calls into question everything we thought we knew about when modern tetrapods evolved.' ...

For a long time, scientists felt confident in their understanding of the timeline of human evolution. But a recent discovery ...

Fossilized tracks from an early reptile are now the oldest known reptilian tracks, meaning the tetrapod ancestor most likely ...

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 ...

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

Before this study, the earliest known amniote fossils had been found in Nova Scotia, Canada, and were dated to the mid-Carboniferous period ... the findings have important implications for ...

Today, their footprints yield a major discovery. The emergence of four-legged animals ... scientists agree amphibians and amniotes separated at the start of the Carboniferous period, about 355 million ...

The timeline of these events has seemed clear-cut: the first tetrapods evolved during the Devonian period and the earliest members of the modern groups appeared during the following Carboniferous ...