Neogene
Geologic period
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The Neogene is a geologic period and system that spans 20.45 million years from the end of the Paleogene Period 23.03 million years ago to the beginning of the present Quaternary Period 2.58 million years ago. The Neogene is sub-divided into two... Wikipedia
Era: Cenozoic
Occurred: 23.03 million years ago - 2.58 million years ago
Chronological unit: Period
Lower boundary definition: Base of magnetic polarity chronozone C6Cn.2n; FAD of the Planktonic foraminiferan Paragloborotalia kugleri
Lower GSSP ratified: 1996