The Great Ordovician Biodiversification Event coincides ~470 million years ago with the break-up of a large asteroid and the resultant frequent bombardment of Earth with asteroid fragments. The ...

Learn more about the time period that took place 488 to 443 million years ago. 3 min read During the Ordovician period, part of the Paleozoic era, a rich variety of marine life flourished in the ...

Long before the dawn of humans, dinosaurs, insects or even trees, a cascade of unfortunate events threatened to end life on earth. During the Ordovician Period, around 485 to 444 million years ago, ...

The Ordovician extinction, if caused by the cooling climate, would be an outlier. Extreme volcanic activity is widely accepted as a main catalyst in most other mass die-offs, since it leads to ...

All the latest science news about ordovician from Phys.org ...

It was the Ordovician era that provided the best trilobites. The shores of Lake Champlain yield fragmented Triarthrus pieces, and the first trilobite that I ever bought was a crumbling Flexicalymene.

During the Ordovician period, the concentration of CO2 in the earth's atmosphere was about eight times higher than today. It has been hard to explain why the climate cooled and why the Ordovician ...

Giant Trilobites And Trilobite Clusters From The Ordovician Of Portugal. ScienceDaily . Retrieved June 4, 2025 from www.sciencedaily.com / releases / 2009 / 05 / 090505072714.htm ...

An unusually well-preserved “Marine Dwarf World” from 462 million years ago was found at Castle Bank, Wales by a team led by the Nanjing Institute of Geology and Palaeontology of the Chinese ...

The well, which targets a previously undrilled Cambrian sandstone, will also be extensively logged and cored in the Silurian and Ordovician shale sections, said Tethys Oil AB, Stockholm.