These pterosaurs soared over South America during the middle of the Cretaceous period, more than a hundred million years ago. At that time a large saltwater lagoon covered the Araripe area ...

These animals included basically all Cretaceous pterosaurs and the largest flying animals ever, such as Quetzalcoatlus, which reached wingspans of 12 m or more. The transition from the basal forms ...

Although this would be small for a Cretaceous pterosaur, it’s absolutely huge for a Jurassic one. “This fossil is also particularly special because it is one of the first records of this type ...

pterosaurs and hairy-feathered birds filled the skies. But as the continents spread, the ocean currents churned with ever more vigor. After a temperature spike in the mid-Cretaceous, the climate ...

It's not clear why some dinosaurs and pterosaurs, such as Quetzalcoatlus, got so large during the Cretaceous Period. Some think it could be related to what gases were in the atmosphere, while others ...