12 нояб. 2024 г. · Ordovician-Silurian extinction, global event that eliminated some 85 percent of all Ordovician species. It was driven by climate and habitat ...

Diversity gradually recovered to pre-extinction levels over the first 5 million years of the Silurian period. Impact on life · Anoxia and euxinia · Other potential factors

The main evidence for this is in trace amounts of mercury and organic materials in late Ordovician rocks, but the theory is not accepted by everyone.

The evidence indicates that climate change caused the extinctions. A major ice age is known to have occurred in the southern hemisphere and climates cooled ...

Significantly the mass extinctions at the end of the Ordovician (LOME) were hidden by the fact that Roderick Murchison's Silurian System contained his Lower and ...

23 окт. 2022 г. · The falling sea level disrupted or eliminated habitats along the continental shelves. Evidence for the glaciation was found through deposits in ...

29 апр. 2019 г. · This mass extinction affected many types of life around the world, but what it affected the most was the sea life during this time. It.

16 янв. 2021 г. · They found fossilized plankton with fatal deformities dating to the event, suggesting the release of toxic metals like iron and lead from the ...

11 сент. 2015 г. · The series of extinctions that occurred during the Ordovician and Silurian ... It was the second largest mass extinction ... But evidence is lacking ...

13 июл. 2017 г. · Abstract. The second largest Phanerozoic mass extinction occurred at the Ordovician-Silurian (O-S) boundary. However, unlike the other major ...