The Paleozoic era's Silurian period saw animals and plants finally emerge on land. But first there was a period of biological regrouping following the disastrous climax to the Ordovician. The ...

The Silurian Period occurred from 443 million to 416 million years ago. It was a time of great environmental changes on Earth and saw the first evidence of life on land.

The Huge Extinctions We Are Just Now Discovering. Season 6 Episode 8 | 8m 58s Video has Closed Captions | CC. Graptolites show us how unpredictable the Silurian period really could be.

Towards the end of the Silurian period, 420 million years ago, nearly one-quarter of life was wiped out in one of the planet's most severe mass extinction events.

A newly discovered fossil “treasure hoard” dating back some 436 million years to the early Silurian period reveals, for the first time, the complete body shape and form of some of the first ...

It might also be the top marine predator of the Silurian era, which is a geological period that began 443.8 million years ago and ended 419.2 million years ago.

This coincides with the Silurian period in Earth's history. Though Eurypterids first enter the fossil record in the Ordovician period between 485 and 445 million years ago, they increased in ...