Definition of Ordovician period

1. Noun. From 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds.

Exact synonyms: Ordovician
Group relationships: Paleozoic, Paleozoic Era
Generic synonyms: Geological Period, Period

Lexicographical Neighbors of Ordovician Period

Ord
Ord kangaroo rat
Order of Australia
Order of Friars Minor
Order of Our Lady of Mount Carmel
Order of the Purple Heart
Orders of Australia
Ordibehesht
Ordnance Survey
Ordnance Survey map
Ordophone
Ordophones
Ordovian
Ordovician
Ordovician period (current term)
Ore.
Oreamnos
Oreamnos americanus
Orebite
Orebites
Orectolobidae
Orectolobus
Orectolobus barbatus
Oregon
Oregon Jargon
Oregon alder
Oregon ash
Oregon cedar
Oregon crab apple

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