Mammals, including humans, stand out with their distinctively upright posture, a key trait that fueled their spectacular evolutionary success. Yet, the earliest known ancestors of modern mammals more ...

Reports of a dolphin with thumb-like digits in its flippers have sparked public curiosity about how far mammal anatomy can stretch and what that might reveal about evolution. I cannot verify the ...

At first glance, this mammal looks like a horse gone terribly wrong. But, in reality, Chalicotherium is far from a botched ...

Paleontologists have identified the earliest known mammal – a small shrew-like animal that lived about 225 million years ago. The species, known as Brasilodon, had previously been categorized ...