Amphibians and reptiles are two intriguing groups of cold-blooded animals with distinct characteristics, habitats, and life ...

A 248-million-year-old fossil of an ancient reptile found in China is the oldest known member of a well-known group of marine reptiles, and may have lived both on land and in the sea. The specimen is ...

A new fossil that captures both birth and death reveals the earliest ancestors of the giant prehistoric sea predators called ichthyosaurs birthed their babies headfirst, according to a new study. The ...

In most narratives, the story of evolution is the story of organisms emerging from the ocean and eventually populating the ...

This image provided by Prof. Per Erik Ahlberg shows an artist's illustration of the possible appearance of a reptile-like creature that lived around 350 million years ago in what's now Australia. The ...

A comprehensive analysis of Mesosaurus fossils shows that bones from adults share similarities with land-dwelling animals -- suggesting older Mesosaurus were semi-aquatic, whereas the juveniles spent ...

Fastest Reptiles in the World: Reptiles are often thought of as slow-moving creatures, but many species have evolved extraordinary speed to survive in the wild. From land sprinters like the Costa ...

Island reptiles are vanishing fast—but scientists are barely paying attention. Here's why that needs to change.

WASHINGTON (AP) — Scientists in Australia have identified the oldest known fossil footprints of a reptile-like animal, dated to around 350 million years ago. The discovery suggests that after the ...