The Late Ordovician mass extinction (LOME), sometimes known as the end-Ordovician mass extinction or the Ordovician-Silurian extinction, is the first of the "big five" major mass …

Ordovician-Silurian extinction, global event that eliminated some 85 percent of all Ordovician species. It was driven by climate and habitat disruptions caused by the onset of glaciation in …

2022年9月12日 · During the Ordovician Period, around 485 to 444 million years ago, the diversity of marine life exploded. Trilobites and mollusks crawled on the ocean floor, plankton-like filter …

2024年12月24日 · The end of the Ordovician was heralded by a mass extinction, the second largest in Earth’s history. (The largest mass extinction took place at the end of the Permian …

2019年11月26日 · The Ordovician-Silurian extinction was the first event of the five major Phanerozoic events and was also first to greatly affect the animal-based communities. The …

The extinction at the end of the Ordovician Period is the oldest of the "Big Five." Animals had not yet conquered land at this time so the extinction was confined to life in the seas.

The Late Ordovician Mass Extinction was the earliest of the ‘big’ five extinction events and the earliest to affect the trajectory of metazoan life. Two phases have been identified near the start …

2023年4月28日 · Geologists have theorized that the extinction at the end of the Ordovician was the result of a single event—the glaciation of the supercontinent Gondwana. Evidence for this …

During the Ordovician period, part of the Paleozoic era, a rich variety of marine life flourished in the vast seas and the first primitive plants began to appear on land—before the second largest...

2018年11月30日 · However, this interval of extinction had low ecological selectivity, which means that overall community structure experienced little change. A new study delves deeper into the …