A new fossil discovery from Texas sheds light on the repeated evolution of predator jaws in fish and how nature often arrives ...

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

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 ...

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

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

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

In a world where everything is constantly changing, it’s amazing that some creatures have stayed almost the same for millions ...

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

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 ...

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The best jaw for hunting fast fish is long and full of sharp teeth. This makes sense to us, but it also makes sense in nature ...