International Chronostratigraphic Chart by the International Commission on Stratigraphy
= International Chronostratigraphic Chart by the International Commission on Stratigraphy
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https://stratigraphy.org/ICSchart/ChronostratChart2024-12.pdf
= International Chronostratigraphic Chart by the International Commission on Stratigraphy
{c}
https://stratigraphy.org/ICSchart/ChronostratChart2024-12.pdf