Fossils

The way that Earth’s first animals reproduced held back life’s diversity for millions of years, until stress and competition led to the development of...

The evolution of tiny arms in several groups of meat-eating dinosaurs was likely driven by the development of strong, powerful heads, which were used...

The earliest evidence of an internal ‘GPS’ system in an animal has been identified by researchers, which could help explain how some modern birds and...

The discovery, published in Nature, opens a new window on early animal evolution.