miocene

Noun
  1. From 25 million to 13 million years ago;
    Appearance of grazing mammals (synset 115150471)
    is an instance of: epoch - a unit of geological time that is a subdivision of a period and is itself divided into ages
    is a part of: tertiary, tertiary period - from 63 million to 2 million years ago
    same as: miocene epoch

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