What is the meaning of age of mammals?

noun

WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). age of mammals. Retrieved September 21, 2026, from http://smartdefine.org/age_of_mammals/definitions/1255146
ChicagoWordNet. 2010. "age of mammals" http://smartdefine.org/age_of_mammals/definitions/1255146 (accessed September 21, 2026).
HarvardWordNet 2010, age of mammals, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/age_of_mammals/definitions/1255146>.
MLAWordNet. "age of mammals" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/age_of_mammals/definitions/1255146>