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The Neogene (meaning “new generation” in Greek) is the second geological period of the Cainozoic and the eleventh period in the Phanerozoic eon. It began 23 million years ago, and ended about 2.6 million years ago.

Before the Neogene was the Palaeogene. The Neogene has two stages: Miocene, and Pliocene. It is followed by the Quaternary.

The Neogene, along with the preceding Palaeogene were originally together considered one period, the Tertiary until recently, when it was split.