While many questions remain about Keurbos susanae, this fossil stands out as one of the most astonishing examples of ...

A 444-million-year-old fossil named "Sue" preserves internal organs of Keurbos susanae, raising questions about arthropod ...

3 min read During the Ordovician period, part of the Paleozoic era ... known mainly from the tiny fossil teeth they left behind. The few complete fossils that have been found suggest they were ...

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

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 ...

Amateurs, too, can look at local rocks to learn about what life was like in the Ordovician Period, 505 to 438 million years ago. Some of our area's unique geological features and the processes that ...

The earliest fossil evidence for sharks or their ancestors are a few scales dating to 450 million years ago, during the Late Ordovician Period. “Shark-like scales from the Late Ordovician have been ...

Fossils of 444 million-year-old creatures whose bodies were preserved "inside-out" have been discovered in South Africa.

The fossils that these layers contain are world-famous for the details that they record about life on Earth during the Late Ordovician Period. Besides preserving pieces of Earth's history, limestone ...

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