Learn how to say Miocene correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word Miocene:
relating to or denoting the fourth epoch of the Tertiary period, between the Oligocene and Pliocene epochs.
(as noun the Miocene) the Miocene epoch or the system of rocks deposited during it.
The Miocene epoch lasted from 23.3 to 5.2 million years ago. During this time the Alps and Himalayas were being formed and there was diversification of the primates, including the first apes
mid 19th century: formed irregularly from Greek meiōn ‘less’ + kainos ‘new’