Ordovician period


Definition: Meaning of, Ordovician period in English to English dictionary.

Pronunciation: / ˌɔːdəˈvɪʃɪən ˈpɪərɪəd /

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  • antonym
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  1. from 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds
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