In Doctor Who, an alien species called the Silurians exists – technologically-advanced humanoid reptiles who lived long ...

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.

Before then, the vertebrate world was a lot more crowded. In the ancient vertebrate world, during the Silurian Period (443.7-419.2 MA) for example, the ancestors of modern vertebrates swam alongside ...

Let us remember, then, that, in the Silurian period, the world, so far as it was raised above the ocean, was a beach, and let us seek there for such creatures as God has made to live on sea-shores ...

The fossils date between 436 and 439 million years ago, during an epoch known as the Silurian Period, in which Earth experienced some dramatic events (such as developing an ozone layer) ...

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 ...

The fossils are said to date back to the Silurian Period, about 443 million years ago to 419 million years ago, when backboned animals were still swimming on a majority water-covered planet.

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.

During the Silurian period, an uplift in the fault system that ran from Cincinnati, though Kentucky and toward Tennessee raised part of the land above sea level.

But in the Carboniferous period, the plants, though still requiring a soaked and marshy soil, were aërial or atmospheric plants : they were covered with leaves; they breathed ; their ...