Late Ordovician extinction - Wikipedia
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 | Overview & Facts | Britannica
The Ordovician-Silurian extinction was almost twice as severe as the K–T extinction event that occurred at the end of the Cretaceous Period, about 66 million years ago, which is famous for …
Late Ordovician Mass Extinction: Earth, fire and ice - PMC
The Late Ordovician mass extinction was the first of the big five Phanerozoic extinctions and the first to affect animal life in oceans. The extinctions removed about 75% of animal species and …
Ordovician Period—485.4 to 443.8 MYA - U.S. National Park Service
Apr 28, 2023 · 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 …
Ordovician Period Information and Facts - National Geographic
These first steps toward life on land were cut short by the freezing conditions that gripped the planet toward the end of the Ordovician. This resulted in the second largest mass extinction of...
End-Ordovician Extinction - Sam Noble Museum
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.
Ordovician–Silurian extinction events | Research Starters - EBSCO
The Ordovician–Silurian extinction events, occurring approximately 440 to 450 million years ago, represent one of Earth's most significant mass extinctions, with over 85% of species lost.
The Ordovician Mass Extinction Killed 85 Percent Of Life On …
May 26, 2025 · Long before that – like, almost 400 million years before – the world was already testing out its appetite for apocalypse with a little-known event called the Late Ordovician …
Tempo of the Late Ordovician mass extinction controlled by
May 30, 2025 · The Late Ordovician mass extinction (LOME) included two phases (I and II) of high species turnover that have been hypothetically linked to the Hirnantian glaciation and …
The Ordovician-Silurian Extinction and Its Fossil Evidence Explained
Dec 21, 2024 · The Ordovician-Silurian extinction stands as one of the largest mass extinction events in Earth’s history, wiping out around 85 percent of all species during its time. This event …