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Stratigraphy
Vääna Substage
Belongs toVolkhov Stage
Typechronostratigraphy
RankSubstage
Scoperegional
Statusinformal standard
AuthorOrviku
Year1958
Age base (Ma)470.3
Age (Ma)Dapingian
Age referenceWebby et al., 2004 (eds)
Index
BIIβ
Date added2005-03-29
Date changed2012-01-06
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