The End-Ordovician Extinction was the first of the so-called ‘Big Five’ mass extinctions in the history of life on Earth - more than 80% of species in the oceans died out. But could you ...

The researchers' idea that Earth once had rings comes from reconstructions of Earth's plate tectonics from the Ordovician period—which ran between 485.4 million years and 443.8 million years ago ...

And—according to a study recently published in the journal Earth and Planetary Science Letters—during an era known as the Ordovician period, it may have once had rings. Seriously.

If you were to look up from Earth some 466 million years ago, you might have seen a gleaming ring stretching across the sky, some scientists say.

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 ...

All the latest science news about ordovician from Phys.org. ... One of Earth's most consequential bursts of biodiversity—a 30-million-year period of explosive evolutionary changes ...

This surprising hypothesis, published in Earth and Planetary Science Letters, stems from plate tectonic reconstructions for the Ordovician period noting the positions of 21 asteroid impact craters ...

Until recently, scientists thought arthropods flourished during the Cambrian Period (538 million to 485 million years ago), which came before the period in which the specimen found by Parry's team ...

Earth may have had a ring made up of a broken asteroid over 400 million years ago, a study finds. The Saturn-like feature could explain a climate shift at the time.

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 ...

And—according to a study recently published in the journal Earth and Planetary Science Letters—during an era known as the Ordovician period, it may have once had rings. Seriously.