What is the meaning of Ordovician?

noun

  • From 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds.
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). Ordovician. Retrieved September 25, 2026, from http://smartdefine.org/ordovician/definitions/1249824
ChicagoWordNet. 2010. "Ordovician" http://smartdefine.org/ordovician/definitions/1249824 (accessed September 25, 2026).
HarvardWordNet 2010, Ordovician, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/ordovician/definitions/1249824>.
MLAWordNet. "Ordovician" 23 October 2010. Web. 25 September 2026. <http://smartdefine.org/ordovician/definitions/1249824>
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