POLARIS has long helped mariners find their way through our planet's seas and oceans by pointing the way north.

International scientists have uncovered the oldest known phosphatic stromatoporoid sponge, dating back approximately 480 ...

Million-Year-Old Exceptionally Rare Fossil Find Stuns Professor: 'Inside-Out, Legless, Headless Wonder' Fossil discoveries ...

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

Learn more about the time period that took place 488 to 443 million years ago. 3 min read During the Ordovician period, part of the Paleozoic era, a rich variety of marine life flourished in the ...

But first there was a period of biological regrouping following the disastrous climax to the Ordovician. The recovery soon got under way in the oceans as climbing temperatures and rising sea ...

Detail images of fossils from the Ordovician Period outcrop on Anticosti Island, Quebec, Canada. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to ...

International scientists have uncovered the oldest known phosphatic stromatoporoid sponge, dating back approximately 480 million years to the Early ...

The oldest echinoids come from the Late Ordovician Period and are approximately 450 million years old. The closest sister group to the echinoids are the holothurians and the two groups must have ...

Researchers have proposed that Earth may have had a ring system 466 million years ago, during a period of intense meteorite bombardment known as the Ordovician impact spike. This finding ...