(BIG BEND NATIONAL PARK, Texas) — Paleontologists have found fossilized remains of a giant possum-like mammal that lived 60 million years ago. The fossils, found at Big Bend National Park in Texas, ...

Scientists in Argentina discovered the oldest known long-necked dinosaur, Huayracursor jaguensis, revealing a much earlier ...

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 ...

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 ...

Scientists have discovered the fossil of a tiny mouse-sized mammal that lived in the time of the dinosaurs in Chilean Patagonia. "Yeutherium pressor" weighed between 30 and 40 grams (about one ounce) ...

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 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 ...

The fossil is the earliest known multituberculate, a distant rodent relative. Aug. 20, 2013— -- What comes to mind when you hear the phrase "Jurassic Park"? Chances are it's images of a gigantic ...