A tiny fossil jaw discovered in southern Brazil is helping scientists fill a gap in the early history of reptiles that ...

“Mirasaura teaches us that a feather is only one of the many wondrous things that reptiles evolved to grow out of their skin,” wrote Yale University evolutionary biologist Richard Prum in an essay ...

The evolutionary history of the mock viper, a mildly venomous, widely distributed Asian snake that mimics highly venomous vipers for self-defense, has been solved. The mock viper represents a ...

The life of a 166-million-year-old reptile has been turned upside down. While Marmoretta oxoniensis was believed to have swum in ancient lagoons, new research reveals it spent its time climbing trees ...

More than 200 million years ago, life on Earth was experimenting with new forms. The Triassic period gave rise to animals that look oddly familiar today, yet belonged to very different lineages.

WASHINGTON — Scientists in Australia have identified the oldest known fossil footprints of a reptilelike animal, dated to around 350 million years ago. The discovery suggests that after the first ...

Add Yahoo as a preferred source to see more of our stories on Google. Reconstruction and illustration of Mirasaura grauvogeli in its natural forested environment. Illustration by Gabriel Ugueto, ...

A delicate, innocuous little fossil reptile known as Mirasaura grauvogeli – “Grauvogel’s wonder reptile” – is forcing a rethink about the evolution of skin and its appendages such as feathers and hair ...

The discovery of a giant marine reptile skull in the United States has revealed new theories about the speed of evolution and how quickly the process can produce diversity. The giant ichthyosaur ...

Mock vipers not only look like tree-dwelling vipers but also act like them. Intriguingly, they have a fake ‘fang’ in the front of their mouth, which befools a predator into thinking that they possess ...