Rapid drying combined with human-made fires changed Southern California forever, killing off ancient bison, dire wolves and five other megafauna species there.
Half a billion years ago, Anomalocaris canadensis probably used its bizarre headgear to reach out and snag soft prey with its spiky clutches.
Most land plants living today have spiral patterns involving the famous Fibonacci sequence of numbers. But an extinct, ancient plant did not.
O. megalodon sharks were warm-blooded megapredators. But colder-blooded great white sharks may have had an evolutionary edge when food sources dwindled.
When researchers study fossils from lower-income countries, they often engage in dubious or illegal practices that can stifle science.
New findings are adding a wrinkle to researchers’ understanding of how duck-billed dinosaurs conquered the Cretaceous world.
Rhinolike mammals called brontotheres repeatedly evolved into bigger and smaller species, a fossil analysis shows. The bigger ones won out over time.
The newly identified species Icaronycteris gunnelli lived about 52.5 million years ago in what is now Wyoming and looked a lot like modern bats.
Dinosaurs like Tyrannosaurus have long been portrayed as lipless, but new research suggests this wasn’t so.
An ancient animal called Essexella may have been a type of burrowing sea anemone, a new study proposes.