Ordovician-Silurian extinction | Overview & Facts | Britannica
Ordovician-Silurian extinction | Overview & Facts | Britannica
Jun 15, 2015
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(Redo! Cuz I beefed something up!) Why not visit the Ordovician period? The Ordovician period began about 486 mya, at the end of the Cambrian. While the Cambrian critters are a hard show to follow, fossil evidence tells us that life on earth diversified even more than during the cambrian explosion! Unfortunately, it all came crashing down, as the end of Ordovician is marked by one of the first of the 5 big mass extinctions. The event was even more deadly than the one that killed non-avian dinosa
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History Photographed on Instagram: "Throughout Earth’s history, five major mass extinctions have drastically reshaped the planet’s biodiversity. The Ordovician-Silurian Extinction, approximately 444 million years ago, stands as one of the earliest cataclysms, eliminating around 85% of marine species. It was likely precipitated by a series of ice ages, causing significant drops in sea levels that disrupted marine habitats. The Permian-Triassic Extinction, known as the “Great Dying,” remains the m
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