! C 2004-02-18 BGS NOT AVAILABLE Not Available - C 2004-01-08 TMCM 2010-06-23 NOT APPLICABLE Not Applicable TMCM ? C 2004-02-18 BGS NOT ENTERED Not Entered AGE C 2004-02-18 BGS AGE Age CHRON O 2004-02-18 BGS 2010-11-22 CHRON Chron TMCM EON C 2004-02-18 BGS EON Eon EPOCH C 2004-02-18 BGS EPOCH Epoch ERA C 2004-02-18 BGS ERA Era MIS O 2010-06-22 TMCM 2016-01-08 MARINE ISOTOPE STAGE Marine Isotope Stage TMCM PERIOD C 2004-02-18 BGS PERIOD Period SERIES C 2004-02-18 BGS 2016-01-08 SERIES Series TMCM STAGE C 2004-02-18 BGS 2016-01-08 STAGE Stage TMCM SUB-AGE O 2010-06-22 TMCM 2016-01-08 SUB AGE Sub Age TMCM SUB-EPOCH C 2010-06-22 TMCM 2016-01-08 SUB EPOCH Sub Epoch TMCM SUB-ERA C 2004-02-18 BGS 2016-01-08 SUB ERA Sub Era TMCM SUB-PERIOD C 2004-02-18 BGS 2016-06-02 SUBPERIOD Subperiod TMCM SUBSTAGE C 2016-01-08 TMCM SUBSTAGE Substage SUBSYSTEM C 2016-01-08 TMCM SUBSYSTEM Subsystem SYSTEM O 2004-02-18 BGS 2010-11-22 SYSTEM System TMCM