Ordovician (n)
Ordovician period (n)

n15128363

type n
lex_filenum 28
def from 500 million to 425 million years ago
def conodonts and ostracods and algae and seaweeds
Outgoing links
Instance Hypernym period, geological period
Part holonym Paleozoic, Paleozoic era
Incoming links
Part meronym Paleozoic, Paleozoic era
Instance Hyponym period, geological period

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