"global chronostratigraphic units"
   (Eon) Phanerozoic Eon (541.0 Ma - present)
     (Era) Cenozoic Era (66.0 Ma - present)
       (Sub-era) †Tertiary Sub-era (66.0 - 2.58 Ma) see Period Tertiary Period (66.0 - 2.58 Ma)
         (Period) †Neogene Period (23.03 - 2.58 Ma)
           (Epoch) †Miocene Epoch (23.03 - 5.333 Ma)
             1.1 (Stage) †Aquitanian Stage (23.03 - 20.44 Ma)
             1.2 (Stage) †Burdigalian Stage (20.44 - 15.97 Ma)
             2.1 (Stage) †Langhian Stage (15.97 - 13.82 Ma)
             2.2 (Stage) †Serravallian Stage (13.82 - 11.63 Ma)
             3.1 (Stage) †Tortonian Stage (11.63 - 7.246 Ma)
             3.2 (Stage) †Messinian Stage (7.246 - 5.333 Ma)