Learn more about the time period that took place 488 to 443 million years ago. 3 min read During the Ordovician period ... known mainly from the tiny fossil teeth they left behind.

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 ...

A living time capsule, the island has an unmatched record of life from the end of the Ordovician period — that's about 437 ...