After years of analysis, the animal turned out to be an entirely new species — one that lived millions of years longer than ...

With its uniquely twisted jaw and sideways-facing teeth, the new species was a relic of an earlier and more experimental time in the evolution of life on Earth. Fossils discovered in Brazil show that ...

In a dry riverbed in Brazil, in a dense forest near the Amazon, a team of paleontologists found a fossilized jawbone from an ...

Scientists discovered a bizarre 275-million-year-old aquatic animal with sideways teeth and a twisted jaw in Brazil, revealing a rare “living fossil” lineage from the Permian period.

Biologists identify a new species of "living fossil" chiton through cutting-edge mitochondrial genome sequencing.

“Living fossil” is often misused, but chitons really haven’t changed much in about 300 million years.

Some animals have been around since the time of the dinosaurs—and they’re still thriving today! Known as “living fossils,” these creatures have barely changed over millions of years and continue to ...

Prehistoric animals are often pictured as distant fossils, yet a surprising number of species still walk, swim, and crawl ...

New research shows that the earliest sponges were soft bodied and lacked skeletons, explaining why their oldest fossils are ...