Category:Ordovician
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The Ordovician Period of the Paleozoic Era, in the Phanerozoic Eon. This category contains events which happened in the Ordovician, a division of the geologic time scale. See geologic time scale for information about its divisions and how they relate to each other.
Pages in category "Ordovician"
The following 2 pages are in this category, out of 2 total.