For years, a mysterious fossil specimen defied categorization, until one paleontologist made a surprising discovery.

Researchers link two ancient mass extinctions to nearby supernova explosions, which may have damaged Earth's atmosphere and ...

Sharks have been around for hundreds of millions of years, appearing in the fossil record before trees even existed. But what did they evolve from, are they ‘living fossils’, and how did they survive ...

A 444-million-year-old fossil without a shell or limbs has been discovered in South Africa with soft tissues intact.

A cataclysmic shift at the end of the Ordovician led to the disappearance of about 85% of species at a time when life was mostly limited to the seas. “Their link to those mass extinctions ...

Sue dates back to the Late Ordovician mass extinction (443 million years ago), when cold temperatures and glacier advancement eliminated nearly 85% of marine species. Researchers are still working ...

A new species of fossil from 444 million years ... More information: A new euarthropod from the Soom Shale (Ordovician) Konservat-Lagerstätte, South Africa, with exceptional preservation of ...