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

The adaptive landscape of posture evolution in mammals and their ancestors. Living and fossil species with sprawling vs upright postures occupy different adaptive peaks.

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

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

This new discovery would push back the evolution of these animals by roughly 30 million years, as early reptiles were previously thought to have evolved around 320 million years ago. You may like ...

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 ...

A native green iguana on Fiji. For years, biologists puzzled over how these iguanas had ended up in the South Pacific, so far from other iguana species. A new study sheds light on their evolution.

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 ...