Origin of Ordovician
OTHER WORDS FROM Ordovicianpost-Or·do·vi·cian, adjective
Words nearby Ordovician
How to use Ordovician in a sentence
The North Welsh area gives two different developments of the Ordovician strata, one of which is much less volcanic than the other.
The beds belonging to the Ordovician system are divided into two series, the Glenkiln shales below and the Hartfell shales above.
The trilobites belong to few genera though these are mostly more highly organised than those of the Ordovician period.
In the Cambrian, Ordovician, and Silurian the invertebrates were represented in all their subkingdoms by a varied fauna.
The Ordovician was closed by a deformation whose extent and severity are not yet known.