Neogene Period
In Old Earth paleontology and geology, the second period of the Cenozoic. It began 23 million years ago, and depending on which authority one consults it either continues today or ended at the beginning of the Quaternary or ended with the Great Expulsion in 621 AT. It includes the Miocene and Pliocene epochs, and may also be considered to include the Pleistocene, Holocene, and Gaiacene.
 
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Development Notes
Text by Stephen Inniss

Initially published on 09 January 2010.