A new species of fossil from 444 million years ago that has perfectly preserved insides has been affectionately named "Sue" ...

In place of oxygen, the ocean was full of hydrogen sulfide, which the researchers believe may have caused the organism 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 ...

Ordovician reefs were also home to large sea ... A few species of these "living fossils" still survive today, such as along the eastern seaboard of the United States, where each spring horseshoe ...

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 ...

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 ...

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 ...

Within it are several fossilized marine creatures from the Ordovician Period, 488.3 million-443.7 million years ago. Such fossils are found across the Himalayas, and finds include trilobites ...

potentially [the fossils] provide a sort of intermediate between the Cambrian record and the later Ordovician records.” Plants that live on land are thought to have ...

Rich brachiopod fossils dating back 470 million years to the Ordovician period were discovered in Zigui county, Central China's Hubei Province. Experts suggest these fossils provide evidence for ...