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Ordovician (geological period 495-440m years ago)
The Ordovician Period is the second epoch of the Paleozoic Era.
Ordovician (geological period 495-440m years ago)
The Ordovician Period is the second epoch of the Paleozoic Era.
Ordovician (geological period 495-440m years ago)
Ordovician (geological period 495-440m years ago)
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