Earth’s earliest mammals spent their lives at a more leisurely pace than their modern counterparts, but they lived a lot longer, analysis of some 200-million-year-old teeth has shown. Using X-ray ...

New examinations of skeletons and animal embryos have allowed researchers to discover how mammals developed protruding, flexible noses. This study contributes to uncovering the origin of mammals’ ...

Pioneering analysis of 200 million-year-old teeth belonging to the earliest mammals suggests they functioned like their cold-blooded counterparts - reptiles, leading less active but much longer lives.

Warm blood is one of the key traits that led to the success of mammals as they evolved from scurrying beneath the feet of dinosaurs to spreading into the wild and wonderful collection of animals we ...

Imagine a crocodile that would rather sprint than swim. It dashes over dry ground on long, slender legs like a reptilian ...

Despite evidence that the earliest examples of creatures such as mammals and reptiles gave birth to live young, they actually may have laid eggs, a scientist argues. "These eggs are probably out there ...

The backbone is the Swiss Army Knife of mammal locomotion. It can function in all sorts of ways that allows living mammals to have remarkable diversity in their movements. They can run, swim, climb ...

Humans have been long fascinated by bird song and the cacophony of other avian sounds — from coos and honks to quacks and peeps. But little is known about how the unique vocal organ of birds — the ...

Scientists count fossilised growth rings in teeth like tree-rings to find out how long the earliest mammals lived. (Credit: Nuria Melisa Morales Garcia) Scientists count fossilised growth rings in ...