Fossils of tiny, jawless marine animals reveal tooth structures sharper than sharks or steel, forcing scientists to rethink ...

These "total monsters of fishes" are extinct today, though new clues about their lives come from CT scans and their closest ...

Discover the monster snake that makes all modern snakes seem small by comparison. Learn about Titanoboa, the biggest snake to roam the Earth!

During these waves of mass extinction, most vertebrate survivors were confined to refugia, or isolated biodiversity hotspots ...

Sauropods were some of the most massive creatures to ever live, and many researchers and scientists believe they needed to ...

Koalas are endangered today. However, habitat loss is not the only factor causing population decline. Chlamydia has played a ...

Modern elephants are impressive, but their extinct relatives were far stranger. This documentary explores prehistoric proboscideans like Deinotherium, Platybelodon, and massive mastodons that once ...

The released birds are the closest living relatives of the extinct Arabian ostrich. The flightless animals' return is part of ...

With copper-blue blood prized by modern medicine and a body plan older than dinosaurs, the horseshoe crab reveals how ancient ...

Animals have evolved crab-like bodies at least five times throughout history, a process known as carcinization.

Ancient England snake fossil Paradoxophidion helps explain how modern snakes evolved during warm humid Eocene period.

While late M-stars are the easiest places to find Earth-sized planets, a new study suggests they are biological dead ends where animal life may never find enough fuel to evolve.