The shift from lizard-like sprawl to upright walking in mammals wasn’t a smooth climb up the evolutionary ladder. Instead, it ...

The sprawling-upright transition across mammal evolution, showing changes in posture and limb bone shape. Magdalen Mercado, ...

A study shows that turtles use both genetic signals and mechanical forces to form the scales on their heads, revealing a ...

The transition from sprawling (reptile-like) to more upright (parasagittal) posture and locomotion was a transformative event in mammalian evolution ...

New fossilized tracks made by an ancient reptile indicate that these animals evolved tens of millions of years sooner than scientists first thought.

Despite Earth's most devastating mass extinction wiping out over 80% of marine life and half of land species, a group of ...

Two lizard-like creatures crossed tracks 355 million years ago. Today, their footprints yield a major discovery. The emergence of four-legged animals known as tetrapods was a key step in the evolution ...

Learn more about archosauromorphs, the early relatives of dinosaurs, that survived inhospitable terrain during the Triassic ...

Every lizard we catch, every measurement we take adds another piece to our understanding of how species adapt and evolve in an ever-changing world. Evolution Natural selection ...