Belongs toUpper Devonian
Typechronostratigraphy
RankStage
Scopeglobal
Statusformal standard
AuthorKlapper et al.,
Year1987
EtymonFrasnes area, Belgium
Age top (Ma)372.2
Age base (Ma)382.7
Index
d6
Date added2003-04-03
Date changed2022-11-04
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