Associations to the word «Ordovician»
Noun
Adjective
Adverb
Wiktionary
ORDOVICIAN, adjective. (geology) Of a geologic period within the Paleozoic era; comprises lower, middle and upper epochs from about 488 to 443 million years ago.
ORDOVICIAN, proper noun. (geology) The Ordovician period.
Dictionary definition
ORDOVICIAN, noun. From 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds.
Wise words
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