What is another word for Oligocene Epoch?
Pronunciation: [ˈɒlɪɡˌə͡ʊsiːn ˈɛpɒk] (IPA) 
The Oligocene Epoch is a geological time period that occurred around 33.9 to 23 million years ago. It is characterized by a cooling trend that resulted in the formation of large ice sheets at the poles. Some synonyms for the Oligocene Epoch include the Oligocene Age and the Oligocene Period. The term Oligocene is derived from the Greek words "oligos" meaning few, and "kainos" meaning new. This epoch witnessed the emergence of new plant and animal species, including the first primates and the earliest elephants. During the Oligocene revolution, the first grasses appeared, which would later become a dominant plant group on the planet.
