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

Scientists in Australia have identified the oldest known fossil footprints of a reptile-like animal, dated to around 350 ...

Most people picture the time of dinosaurs as a steamy, tropical world. But during the Late Cretaceous period, northern Alaska ...

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 emergence of four-legged animals known as tetrapods was a key step in the evolution of many species today – including humans.

In other words, the appearance of reptiles—and by extension, the evolutionary branch that leads to humankind—gets pushed back ...

Cambrian Period creatures known as sea moths seemed alien because of their additional eye, but a study finds anatomical ...

Welcome ancient survivors! These creatures have remained little altered for millions of years and continue to roam the planet ...

The Arctic landscape during the Cretaceous Period may have been dominated by the dinosaurs, but the rivers and streams held something more familiar. Alaska's fresh waters 73 million years ago were ...

Researchers uncovered the oldest known salmon species, showing that northern fish have ancient Arctic roots dating back 73 ...

believed to be roughly 400 million years old. These fossils coexisted with jawless fish, armored placoderms, early sharks, ...

A diverse international team of scientists has now made a remarkable discovery: The world's oldest ... the fossil samples. "The synchrotron allowed us to virtually reconstruct these fish in ...