scientific work by the International Commission on Stratigraphy
linked open dataset of chronostratigraphic terminology based on the 2017-02 edition of the International Chronostratigraphic Chart from the International Commission on Stratigraphy
linked open dataset of chronostratigraphic terminology based on the 2018-08 edition of the International Chronostratigraphic Chart from the International Commission on Stratigraphy
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