The MDICE is a globally recognized positive carbon isotope excursion event in the Ordovician. Historically, it has been primarily documented in δ 13 C carb data, with only scattered, incomplete ...

Journal of Paleontology, Vol. 93, No. 6 (NOVEMBER 2019), pp. 1137-1158 (22 pages) End-Ordovician extinctions had a profound effect on shallow-water benthic communities, including the Crinoidea.

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. The tiny country of Wales on the western coast of Great Britain may ...

Today, only the largest planets in the solar system have rings, but a new study suggests Earth may have been a ringed planet in the distant past. Scientists studying the geology of the Ordovician ...

The Earth has gone through many major events over the course of hundreds of millions of years. Some of the most significant are the six mass extinction events that have occurred. These are times when ...

Back when the Earth was crawling with trilobites and other strange shelled creatures, our planet may have had a ring just like Saturn's. This ancient ring system is thought to have formed about 466 ...

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 ...

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 survive its ...