Fossils

The newfound vampyromorph species was equipped with defensive features not previously seen in the fossil record — and it's related to modern-day vampire squid.

The newly discovered species was part of the phylum annelid, which is made up of segmented worms.

A small badger-like mammal and a juvenile bipedal dinosaur were locked in a battle to the death 125 million years ago when they were both killed and perfectly preserved by a volcanic mudflow.

Fossil hunters stumbled upon a large mammoth tusk during a "fossil walk."

As tectonic plates clash and pull apart, sea levels change. This process has shaped marine biodiversity over time, a new study suggests.

With huge teeth and large eyes, Crassigyrinus scoticus was specially adapted to hunt in the coal swamps of Scotland and North America.

Wales' new "Castle Bank" fossil site could be among the world's most important deposits.

What had multiple eyes and a hard shell? A trilobite, that's what.

The wide-set eyes and exaggeratingly long teeth likely helped Thylacosmilus atrox become a successful hunter.

The fossilized remains of an ichthyosaur dating back to shortly after the Permian mass extinction suggest that the ancient sea monsters emerged before the catastrophic event.