Researchers Crack Centuries-Old ‘Skeleton’ Mystery With Help of 550-Million-Yr-Old Fossils, Reveal What Ancient Animals ...

Scientists discovered that choanoflagellates coordinate their movements through electrical signaling via voltage-gated ...

Scientists have discovered the oldest known animal with saber teeth: a predator that lived 270 million years ago. This animal, from before the age of the dinosaurs, was a dog-like creature that was ...

The origin of mammals is shrouded in mystery, but every fossil clue helps rewrite the story. A new discovery on a Mediterranean island is challenging what we know about when—and where—mammal ancestors ...

Before dinosaurs walked the Earth and tens of millions of years before the first mammals appeared, distant mammal relatives with long, serrated canine teeth were the dominant carnivores on land.