Word:

Ordovician period

Noun1.Ordovician period - from 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds
Synonyms: Ordovician
geological period, Ordovician, Paleozoic, Paleozoic era, period
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ordinary shares
Ordinaryship
Ordinate
Ordinate figure
Ordinately
Ordination
Ordinative
Ordinator
Ordine placitandi servato
Ordnance
ordnance stores
Ordnance Survey
Ordonnance
Ordonnant
Ordovian
Ordovician
-- Ordovician period --
Ordure
Ordurous
Ore
ore bed
ore dressing
Ore hearth
ore processing
Ore tenus
Oread
Oreades
Oreamnos
Oreamnos americanus
Orectic
Orectolobidae
Orectolobus
Orectolobus barbatus
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