Silurian
The Silurian period of the Paleozoic era, 440-410 million years ago, follows the Ordovician period of the Paleozoic, "the age of ancient life." The Silurian was named by the R. ...
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Silurian Period
In geologic time, the Silurian Period, the third period of the Paleozoic Era, covers the time from roughly 440 million years ago (mya) until 410 mya. The name, Silurian, derives from t...
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Silurian
Silurian Period