Ordovician-Silurian extinction | Overview & Facts | Britannica
Ordovician-Silurian extinction | Overview & Facts | Britannica
Jun 15, 2015
britannica.com
Ordovician in biology
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Ordovician in biology
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The Ordovician period was home to six-foot sea scorpions, giant squid-like cephalopods with towering shells, and countless trilobites. But it also marked the first mass extinction in Earth’s history, wiping out 85% of all life. For the first time, animal life faced a global collapse on an unprecedented scale. The cause? A dramatic shift from intense global cooling to rapid warming. It was a devastating one-two punch. Full series on Colossal's YouTube. | Colossal Biosciences
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The Ordovician period was home to six-foot sea scorpions, giant squid-like cephalopods with towering shells, and countless trilobites. But it also marked the first mass extinction in Earth’s history, wiping out 85% of all life. For the first time, animal life faced a global collapse on an unprecedented scale. The cause? A dramatic shift from intense global cooling to rapid warming. It was a devastating one-two punch. Full series on Colossal's YouTube. | Colossal Biosciences
5.3K viewsMay 19, 2025
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Life in the Ordovician: 485 - 444 million years ago
Life in the Ordovician: 485 - 444 million years ago
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australianenvironmentaleducation.com.au
Ordovician-Silurian Extinction | Overview & Causes
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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
0:32
(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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