Fossils

A bizarre fossil from China's Chengjiang Lagerstätte site hints at early diversity in a group of Cambrian marine arthropods called radiodonts.

Prominent and controversial scientist James Hansen called for a fee on fossil fuels.

Scientists recently unearthed stunning fossils of sturgeon from Hell's Creek that might have died on the day that the dinosaur-killing asteroid struck.

Researchers in China have discovered fossilized fragments of an ancient shark-like fish — the oldest jawed vertebrate ever discovered.

An armored "worm" from the Cambrian called Wufengella bengtsoni is the ancestor to three major animal groups that have totally different lifestyles today, a new study finds.

The oldest three-dimensional green algae fossil ever found dates back more than half a billion years and may reveal that plants are older than believed.

"Alien goldfish" from the Carboniferous had toothy tongue-like structures that resembled those in living mollusks, a new study finds.

The earliest known mammal was a shrewlike animal that emerged in the Triassic period with the first dinosaurs, a controversial new study claims.

The remains of an extinct lion-size otter have been discovered in Ethiopia, and it's the biggest otter on record, a new study finds.