HyperDic: ordovician

English > 1 sense of the word Ordovician:
NOUNtimeOrdovician, Ordovician periodfrom 500 million to 425 million years ago
English > Ordovician: 1 sense > noun 1, time
MeaningFrom 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds.
SynonymOrdovician period
Instance ofperiod, geological periodA unit of geological time during which a system of rocks formed
Part ofPaleozoic, Paleozoic eraFrom 544 million to about 230 million years ago
SpanishOrdoviciano, ordovícico
Catalanordovicià

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