Stratigraphy
Lochkovian
Belongs toLower Devonian
Typechronostratigraphy
RankStage
Scopeglobal
Statusformal standard
AuthorMartinsson
Year1977
EtymonLochkov, city in Czech Republic
Age top (Ma)410.8
Age base (Ma)419.2
Age (Ma)Devonian
Index
d1
Date changed2022-11-04
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