Quaternary
Period
>
The Quaternary is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy. It follows the Neogene Period and spans from 2.58 million years ago to the present. Wikipedia
Epochs: Pleistocene and Holocene
Era: Cenozoic
Chronological unit: Period
Lower boundary GSSP: Monte San Nicola Section, Gela, Sicily, Italy; 37°08′49″N 14°12′13″E / 37.1469°N 14.2035°E
Lower GSSP ratified: 2009 (as base of Quaternary and Pleistocene)
Regional usage: Global (ICS)
Stratigraphic unit: System