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the Pliocene

noun [S]
 
 
/ˈplaɪ.ə.siːn/ US  /-oʊ-/ specialized

Definition

the period of time between around 5.3 million and 1.8 million years ago, in which many modern mammals and the first modern humans appearedPrehistoryGeology - general words Pliocene
 
 
adjective
the Pliocene eraPrehistoryGeology - general words
(Definition of the Pliocene noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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