At 11 feet (3.4m) tall and nearly 27 feet (8.2m) long, Cooper’s pointy-backed herbivore – affectionately known as Apex – is ...

A newly described fossil reveals that leeches are at least 200 million years older than scientists previously thought, and ...

Learn about a 480-million-year-old leech fossil that revealed that ancient leeches didn’t have the biological components necessary to suck blood.

It's extremely rare to find a complete skeleton of a dinosaur. It's rarer still that such a skeleton needs to be found twice. Such is the fate of "Stan" the T. rex, a massive, mostly complete skeleton ...

Eurhinosaurus mistelgauensis ichthyosaur species found in Germany shows rare preservation and injuries linked to deep diving ...

(CNN) — A Ceratosaurus fossil that is one of only four known to exist has sold for $30.5 million at auction. The rare dinosaur fossil is “one of the finest and most complete examples of its kind ever ...

At a certain point in Earth’s distant past, the planet’s assortment of organic molecules and compounds aligned to create the ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A Ceratosaurus ...