The Neogene is a geologic period and system in the International Commission on Stratigraphy (ICS) Geologic Timescale starting 23.03 ± 0.05 million years ago and ending 2.588 million years ago. The Neogene Period follows the Paleogene Period as the 2nd period within the Cenozoic Era and is succeeded by the Quaternary Period.

Ìgbà Ìbíniọ̀tun
Ìgbà Ìbíniọ̀tun
23.03–2.588 ẹgbẹgbẹ̀rún ọdun sẹ́yìn
Mean atmospheric O2 content over period duration ca. 21.5 Vol %[1]
(108 % of modern level)
Mean atmospheric CO2 content over period duration ca. 280 ppm[2]
(1 times pre-industrial level)
Mean surface temperature over period duration ca. 14 °C[3]
(0 °C above modern level)
Àdàkọ:Ìgbà Ìbíniọ̀tun graphical timeline

The last epoch into which the Paleogene Period is subdivided is its Oligocene Epoch. The Neogene Period is subdivided into 2 epochs, the earlier Miocene Epoch and its succeeding Pliocene Epoch. The first epoch into which the Quaternary Period is subdivided is its Pleistocene Epoch.[4]



Ìgbà Ìbíniọ̀tun
Miocene Pliocene
Aquitanian | Burdigalian
Langhian | Serravallian
Tortonian | Messinian
Zanclean | Piacenzian
Preceded by Proterozoic Eon 542 Ma - Phanerozoic Eon - Present
542 Ma - Paleozoic Era - 251 Ma 251 Ma - Mesozoic Era - 65 Ma 65 Ma - Cenozoic Era - Present
Kámbríà Ọ̀rdòfísíà Sílúríà Dẹfoníà Eléèédú Pẹ́rmíà Tríásíkì Jùrásíkì Ẹlẹ́fun Ìbíniàtijọ́ Ìbíniọ̀tun Quaternary