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, ...

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 ...

A 205-million-year-old fossil, hidden in a museum, has been identified as the oldest modern lizard, triggering a significant ...

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 ...

Lizard-eating corn snakes are also out hunting, trying to find the anoles before we do. As we wrap up another 16-hour day at about 11:30 p.m., the team shares stories of the night. Evolution on ...

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.