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 ...

This extinction pulse is typically attributed to the Late Ordovician glaciation, which abruptly expanded over Gondwana at the beginning of the Hirnantian and ... Impact on life · Anoxia and euxinia · Other potential factors

The cause of the first wave of extinctions was worldwide cooling, likely resulting from the emergence of land plants and a decrease in greenhouse gases. The ...

18 мая 2020 г. · Late Ordovician mass extinction caused by volcanism, warming, and anoxia, not cooling and glaciation | Geology | GeoScienceWorld.

2 нояб. 2021 г. · Most research suggests that the extinction was associated with a cooling climate or changes in oxygenation of the ocean.

12 сент. 2022 г. · One prominent theory posits that an initial wave of extinction occurred when the ice age began. The organisms at the bottom of the food chain, ...

31 окт. 2024 г. · The Ordovician Period ushered in significant changes in plate tectonics, climate, and biological systems. Rapid seafloor spreading at oceanic ... Animals · Paleoclimate · Invertebrates · Circulation

28 апр. 2023 г. · Geologists have theorized that the extinction at the end of the Ordovician was the result of a single event—the glaciation of the supercontinent ...

The Late Ordovician Mass Extinction was the earliest of the 'big' five extinction events and the earliest to affect the trajectory of metazoan life.