The Earth has gone through many major events over the course of hundreds of millions of years. Some of the most significant ...

Since the first sharks emerged in the world’s oceans nearly half a billion years ago, the world has gone through five major mass extinction events. Each one took a considerable fraction of all the ...

The Ordovician period offers a detailed window into early marine ecosystems and climatic transitions, with palynology and microfossil biostratigraphy serving as key tools in reconstructing these ...

The world and its ecosystems have been around for a long time — so long that the first mass extinction occurred “just shy” of 445 million years ago.

A systematic re-evaluation of China’s Ordovician tectonic architecture, published in the Journal of Palaeogeography (Chinese Edition), proposes a refined model dividing the region into four mega ...