Researchers have uncovered the fossil of an early mammal named the "crazy beast" that lived 66 million years ago on Madagascar, and it's unlike any mammal ever known, living or extinct. This mammal, ...

An international research team has uncovered 270-million-year-old fossil tracks belonging to a dog-like predator considered one of the earliest mammal ancestors on the island of Mallorca. Led by ...

STORY: Scientists from the University of Chile say they have unveiled findings of a mouse-sized mammal that roamed Earth 74 million years ago. :: University of Chile Handout The fossil belongs to the ...

On the geological timescale, humans’ stay on the planet earth amounts to little more than the blink of an eye. Before we emerged, earlier creatures enjoyed golden ages for more than twice as long as ...

Tucked away in a remote bonebed in Arizona's Petrified Forest National Park laid hundreds of fossils, including a fragile jawbone belonging to one of the oldest-known flying reptiles: the pterosaur.

If textbooks ever made you believe mammals like humans, cats, and kangaroos first evolved somewhere up north, think again. A remarkable discovery from Australia has flipped our understanding of mammal ...

This illustration by Mauricio Alvarez depicts 'Yeutherium pressor,' a tiny mammal that lived in the time of the dinosaurs in what is now southern Chile The fossil was discovered in the Rio de Las ...

If you’ve always thought echidnas and platypuses were distant cousins who went their separate ways on land and water, think again. A single fossilized arm bone, found in a remote corner of ...

For millions of years, the land we now call the United States has been home to towering prehistoric beasts, strange sea creatures, and lush ancient forests that no longer exist. Evidence of this ...