The coelacanth is known as a "living fossil" because its anatomy has changed little in the last 65 million years. Despite ...

Sharks and rays have been found to have an XY sex chromosome system superficially like our own, but with its own unique ...

Paleontologists identified a new ancient reptile appendage. And, how fast did dinosaurs run? A longstanding equation for dino ...

Body coverings such as hair and feathers have played a central role in evolution. They enabled warm-bloodedness by insulating ...

Finely preserved brain features in a tiny marine arthropod fossil suggest that arachnids – spiders and their close kin – may ...