An illustration of the Devonian period fish, Dunkleosteus, preying on eurypterids (sea scorpions), which in turn were feeding on the smaller trilobites. Depleting oxygen and rising hydrogen sulfide ...

The late Devonian extinction is one of the five major extinction events to have occurred on Earth. It's not unusual for scientists to argue over what causes a mass extinction event -- of the five, the ...

Diverse and full of sea life, the Earth's Devonian era—taking place more than 370 million years ago—saw the emergence of the first seed-bearing plants, which spread as large forests across the ...

Violent supernovas may have caused two of Earth’s largest mass extinctions that have never been completely explained, according to a theory put forward in new research.During the final stages of a ...

If we did see a "local" supernova, we'd have plenty of time to develop the technology to protect the earth from its worst effects. Click to expand... We'd certainly have a lot of time, but I'm not ...

Our planet’s first known mass extinction happened about 440 million years ago. Species diversity on Earth had been increasing over a period of roughly 30 million years, but that would come to a halt ...

In times of environmental upheaval, how do communities of organisms respond? When entire species are wiped out, do surviving species move in and take over, or do new species immigrate to fill the gaps ...

Two of Earth's largest mass extinction events were likely triggered by the fallout from two supernovae in nearby space. This is the conclusion of a team of researchers from Keele University, England, ...