Tomkins and his team reconstructed an unusual rise in the number of meteorite impacts known as the Ordovician impact spike, ...

The rings are theorized to have formed 466 million years ago during one of the coldest periods in the planet's history, known ...

Learn about Earth's Ordovician period, which ended in the greatest Mass Extinction of all time.

Impact craters found around the Earth that were made around the same time could be linked to debris falling from a ring, a new study suggests.

A recent study claims that Earth may have once had a ring. The theory would explain the presence of an odd density of impact craters around the equator dating back to the Ordovician period. A ring ...

Scientists have been trying to unravel what killed nearly all of Earth’s animals 400 million years ago. Could it be monstrous deformities caused by toxic metals in the ocean?

Specifically, the findings support the hypothesis that supernovae could have triggered two of the so-called "big five" mass extinctions: those at the end of the Ordovician Period, some 445 million ...

The "Big Five" mass extinctions of the Phanerozoic Eon have long attracted significant attention from the geoscience community and the public. Among them, the Late Ordovician Mass Extinction (LOME ...

There are several great nearby places to see geology for yourself, whether you're interested in collecting Late Ordovician fossils, exploring glacier-carved landscapes, or observing streams as they ...

The fossilized time capsule from Castle Bank is from the middle of the Ordovician Period, about 462 million years ago.