Some 247 million years ago, a bizarre, six-inch-long reptile crept down a branch, its prehensile tail and feet clutching the bark like a monkey, and its narrow, birdlike face scanning its surroundings ...

The discovery, in a bizarre animal not closely related to birds, could change how scientists think about the origin of feathers. The holotype fossil of Mirasaura, which was found in 1939 in ...

This video features mammals, frogs, and reptiles of the Amazon rainforest, filmed in 4K. It captures the diversity of life on the forest floor, with background music and no narration.