The "Big Five" mass extinctions of the Phanerozoic Eon have long attracted significant attention from the geoscience ...

The "Big Five" mass extinctions of the Phanerozoic Eon have long attracted significant attention from the geoscience ...

The Ordovician Period was around 485 to 444 million years ago and had a thriving ecosystem beneath the water, before fauna ...

Surprising new fossil evidence undermines the idea that there was ever a mass extinction on land – and may force us to ...

World Reef Awareness Day 2025 highlights the coral reef crisis and the urgent need for global conservation action.

Teeth are good for chewing and biting, but they are also sensitive – and that may have been their original function hundreds of millions of years ago ...

For example, Cope's Rule holds that animal species tend to evolve to become ... an extensive dataset of body size for Cambrian and Ordovician forms, covering 1,091 genera and representing more ...

It lived in the immediate aftermath of the end Ordovician extinction event more ... This extinction wiped out about 85% of Earth’s species. The marine basin that Keurbos susanae inhabited ...

A newly identified fossil species dating back 444 million years has been officially ... The study describes a previously unknown multisegmented organism from the Ordovician period. Lead author ...

The first of five (or possibly six) mass extinctions in Earth history, the Late Ordovician mass extinction ... While the mystery remains, the naming of the species at least checks off one to- ...

The Ordovician extinction killed 60 percent of marine invertebrates at a time when life was largely confined to the sea, while the late Devonian wiped out around 70 percent of all species and led to ...