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Ordovician   Listen
adjective
Ordovician  adj.  (Geol.) Of or pertaining to a division of the Silurian formation, corresponding in general to the Lower Silurian of most authors, exclusive of the Cambrian.


noun
Ordovician  n.  (Geol.) The Ordovician formation.





Collaborative International Dictionary of English 0.48


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"Ordovician" Quotes from Famous Books



... occurring in the region of snow, has been named the Haimanta system. The upper part of the Haimanta system has been found to contain the characteristic trilobites of the Cambrian period of Europe. Over this system lie beds which have yielded in succession Ordovician and Silurian fossils, forming altogether a compact division which has been distinguished locally as the Muth system. Then follows the so-called Kanawar system, which introduces Devonian conditions, ...
— The Panjab, North-West Frontier Province, and Kashmir • Sir James McCrone Douie


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