For more than a century, paleontologists have treated dinosaurs and mammals as rival success stories that simply took turns ruling the planet. New work on how each group raised its young suggests the ...

The new research is the first to look back at early mammals in full color. Using advanced fossil imaging methods and a thorough examination of the pigment-producing cells present in living mammals, ...

According to most experts, the first mammal was Morganucodon, a small, shrew-like rodent that appeared during the Jurassic Period, approximately 200 million years ago. It weighed a few ounces and ...

More mammals were living on the ground several million years before the mass extinction event that wiped out the dinosaurs, new research has revealed. More mammals were living on the ground several ...

Researchers have uncovered the fossil of an early mammal named the "crazy beast" that lived 66 million years ago alongside dinosaurs and giant crocodiles on Madagascar, and it's unlike any mammal ever ...

Fossils reveal dinosaurs were flourishing in diverse ecosystems right up until the asteroid impact ended their reign. Their abrupt extinction reshaped Earth’s ecosystems and set the stage for mammals ...

Rare fossils uncovered in Colorado show an unexpected swamp-dwelling creature lived among the dinosaurs millions of years ago. A team of paleontologists uncovered the “new (or, more accurately, very ...

World News Study reveals when the first warm-blooded dinosaurs roamed Earth (CNN) — Were dinosaurs warm-blooded like birds and mammals or cold-blooded like reptiles? It’s one of paleontology’s oldest ...

WASHINGTON (Reuters) - A stoutly built mammal cousin the size of an elephant that munched on plants with its horny beak roamed the European landscape alongside dinosaurs during the Triassic Period ...

GRAND JUNCTION, Colo. (KJCT) - A fossil of a new species was found by a team from the University of Colorado Boulder on the western slope. The mammal fossil was found near Rangely and is from the ...

(CNN) — Before dinosaurs walked the Earth and tens of millions of years before the first mammals appeared, distant mammal relatives with long, serrated canine teeth were the dominant carnivores on ...