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Quaternary Period.

Pliocene

Gelasian
Pleistocene
Paleolithic
Lower Paleolithic
Middle Paleolithic
Upper Paleolithic

Holocene

Mesolithic or Epipaleolithic
Neolithic

Gelasian (also known as Waltonian) is a stage of the Pliocene Epoch. It spans the time between 2.588 ± 0.005 mya (million years ago) and 1.806 ± 0.005 mya.[1] The Gelasian is now regarded as the beginning of the Quaternary.[2]

The International Union for Quaternary Research (INQUA) has proposed that the Gelasian be moved from the Pliocene to the Pleistocene in order that the geologic time scale be more consistent with the key changes in Earth's climate, oceans, and biota that occurred then (2.588 mya) and corresponding to the Gauss-Matuyama magnetostratigraphic boundary.[2]

References

  1. GeoWhen Database - Gelasian
  2. 2.0 2.1 Clague, John et al. (2006) "Open Letter by INQUA Executive Committee" Quaternary Perspective, the INQUA Newsletter International Union for Quaternary Research 16(1):


Neogene period
Quaternary
Pliocene Pleistocene Holocene
← Neogene | Gelasian Early | Middle | Late  

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