|colspan="5"|{{hidden begin |title=NotesGhi andchú referencesvà tham khảo<ref name="ICC">{{Chú thích web |url=http://www.stratigraphy.org/ICSchart/ChronostratChart2020-01.pdf |title=International Chronostratigraphic Chart |publisher=International Commission on Stratigraphy |last=Cohen |first=K. M. |last2=Finney |first2=S. C. |last3=Gibbard |first3=P. L. |last4=Fan |first4=J.-X. |date=January 2020 |accessdate= ngày 22 tháng 9 năm 2020 }}</ref><ref name="FRS">{{Chú thích tạp chí |journal=Episodes|volume=41|issue=4|pages=213–223 |url=http://quaternary.stratigraphy.org/wp-content/uploads/2018/07/Walker-et-al.-2018_Episodes_online.pdf |title=Formal ratification of the subdivision of the Holocene Series/Epoch (Quaternary System/Period) |author=Mike Walker |display-authors=etal |doi=10.18814/epiiugs/2018/018016 |publisher=Subcommission on Quaternary Stratigraphy (SQS) |date=December 2018 |accessdate= ngày 22 tháng 9 năm 2020 }} ''This proposal on behalf of the SQS has been approved by the International Commission on Stratigraphy (ICS) and formally ratified by the Executive Committee of the International Union of Geological Sciences (IUGS)''.</ref> |bg1={{period color|quaternary}}}}Subdivision of the Quaternary Period according to the [[International Commission on Stratigraphy|ICS]], as of May 2019.<ref name="ICC"/>
For the Holocene, dates are relative to the year 2000 (e.g. Greenlandian began 11,700 years before 2000). For the beginning of the Northgrippian a date of 8,236 years before 2000 has been set.<ref name="FRS"/> The Meghalayan has been set to begin 4,250 years before 2000.<ref name="ICC"/>
