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ordovician |
Grep of noun ordovician ordovician ordovician period Overview of noun ordovician The noun ordovician has 1 sense (no senses from tagged texts) 1. Ordovician, Ordovician period -- (from 425 million to 500 million years ago; conodonts and ostracods and algae and seaweeds) Overview of noun ordovician The noun ordovician has 1 sense (no senses from tagged texts) 1. Ordovician, Ordovician period -- (from 425 million to 500 million years ago; conodonts and ostracods and algae and seaweeds)
ordovician definition
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