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 ...

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.

The fossils date back to the Silurian period, an important era for life on earth from 443 million years ago to 419 million years ago.

The fossils date back to the Silurian period, an important era for life on earth from 443 million years ago to 419 million years ago. Scientists believe our backboned ancestors, ...

Scientists believe fish evolved to have teeth and jaws during the Silurian period more than 400 million years ago. With a set of chompers, fish ditched their former fellow bottom feeders to 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 ...

In recent years, paleontologists have found scales and other bits that suggest the presence of jawed fish during the Silurian period, which lasted from 443.8 million to 419.2 million years ago.