http://resource.geosciml.org/classifier/ics/ischart/BaseMiddlePleistoceneTime
| numeric position | 0.774 | |||||||
|---|---|---|---|---|---|---|---|---|
| change note | 2020/01 - Quaternary: numeric age Base Chibanian Stage changed to 774 ka (in accordance with GSSP documentation; GSSP is 1 m below base Brunhes Chron in type section; base Brunhes | |||||||
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| has TRS | Millions of years ago original | |||||||