Roadian Bibliographic references: International Stratigraphic Chartabsolute age of base: 270600kyerror in absolute age of base: 0%rank: Age/Stage status: global Read more about RoadianAdd new comment
Lower Kazanian in which chronostratigraphic unit is the base: Roadianrank: Subage or age/Substage status: regionalin which chronostratigraphic unit is the top: Roadian Read more about Lower KazanianAdd new comment