For years, we suspected that Alvarezsaurids underwent a rare process of evolutionary miniaturization directly coupled to a ...

Some animals are born with horns while others shed their antlers each year. But what's the evolutionary purpose?

Tyrannosaurus rex may have taken far longer to grow up than scientists once thought. By analyzing growth rings in fossilized leg bones from 17 tyrannosaur specimens and using new statistical methods, ...

Population crashes are dangerous and can be irreversible. But new research shows they are not always an evolutionary dead end.

Along parts of the Western Australian coast, large shells sometimes lie half buried in tidal mud. They belong to Syrinx aruanus, known as the Australian trumpet and regarded as the largest living sea ...

(CNN) — A chunky, squat creature that roamed Earth 307 million years ago is helping scientists understand how plant-eating animals first appeared on land. The newly described species is one of the ...

Are any of these animals still around today? Complex life has existed on earth for just over half a billion years, and in all that time the planet has seen some terrifying, weird, and incredible ...

Skipping town and starting over somewhere new is never easy, and being immediately placed into indentured servitude and called annoying by all your neighbors certainly doesn’t help. But that’s exactly ...