The Palaeogene is the geological period from 66.00 to 23.04 million years ago in the consulted chart. It contains the Paleocene, Eocene and Oligocene, preceding the Neogene within the Cenozoic.[ref]
International Chronostratigraphic Chart by International Commission on Stratigraphy (2026-06). Cenozoic and Mesozoic columns; numerical ages in Ma
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