Penultimate geologic period

• 23 million year stretch during the Cenozoic era
• Period of the Cenozoic Era
• Period before the Quaternary
• Latter part of the Tertiary period
• Part of the Cenozoic era

Wikipedia Word definitions in Wikipedia
The Neogene is a geologic period and system in the International Commission on Stratigraphy (ICS) Geologic Timescale starting 23.03 million years ago and ending 2.58 million years ago. The second period in the Cenozoic Era , it follows the Paleogene Period ...