International Chronostratigraphic Chart with notations
This original English version of the International Chronostratigraphic Charter, published in August 2016 on the occasion of the 35 IGC, incorporates alphanumeric notations for eons, eras, systems, series and stages.
The charters and more detailed information on GSSPs are available on the website of the International Commission on Stratigraphy (ICS) http://www.stratigraphy.org.
The CMYK and RGB codes and the official Stratigraphic Chart notations can be downloaded below: