What is the meaning of tertiary period?

noun

  • From 63 million to 2 million years ago.
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). tertiary period. Retrieved September 20, 2026, from http://smartdefine.org/tertiary_period/definitions/1315621
ChicagoWordNet. 2010. "tertiary period" http://smartdefine.org/tertiary_period/definitions/1315621 (accessed September 20, 2026).
HarvardWordNet 2010, tertiary period, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/tertiary_period/definitions/1315621>.
MLAWordNet. "tertiary period" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/tertiary_period/definitions/1315621>