This ancient, leg-bearing snake is rewriting the story of how serpents slithered, and sometimes walked, their way through evolutionary history.

On very rare occasions, an exceptional fossil is unearthed that provides an extraordinary glimpse into the evolution of a group of organisms. This time, it is the beautifully preserved skull of an ...

Fossils reveal snakes once possessed functional legs, challenging the notion of a linear evolutionary path. The discovery of ...

Hidden for 95 million years beneath layers of sediment, the remarkablywell-preserved skull of an ancient legged snake species — Najash rionegrina — has now revealed a chapter of evolutionary history ...

Snakes have adapted to climb trees, leap across hot sand, and even swim through water — all without arms or legs. What’s their secret? Mike Bock This corn snake, shown here at the Smithsonian's ...