A tiny skull found on a beach in Devon has rewritten the early history of lizards, snakes and the tuatara, the last survivor ...

Researchers report the discovery of the oldest known lizard ancestor in England, a tiny Triassic reptile with oversized teeth.

Ichthyosaurs represent a diverse clade of Mesozoic marine reptiles that rapidly adapted to fully aquatic lifestyles following the end-Permian mass extinction. Their streamlined, 'fish-like' body plan, ...

Some 80 million years before birds took flight, another group of creatures dominated the skies — the pterosaurs. These ...

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 ...

The evolution of feathers in ancient animals was restricted to dinosaurs and their modern bird descendants. However, a reptile of the Middle Triassic period evolved something similar to feathers, ...

(CNN) — Scientists have discovered a 246 million-year-old marine reptile fossil, the oldest of its kind to be found in the Southern Hemisphere, shining a new light on the early evolution of marine ...

A brand new species of ancient snake has been discovered in western Wyoming. Four specimens of the ancient species were found huddled together, revealing the secrets of the social lives of ...

Heat and cold reshape fertility in reptiles, from scrambled sperm to sex reversal, with lessons for evolution under climate ...

Body coverings such as hair and feathers have played a central role in evolution. They enabled warm-bloodedness by insulating the body, and were used for courtship, display, deterrence of enemies and, ...

The sprawling-upright transition across mammal evolution, showing changes in posture and limb bone shape. The transition from sprawling (reptile-like) to more upright (parasagittal) posture and ...