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Substage: Pendleian + Arnsbergian (chronostratigraphic unit)
Classification by:

stratigraphic intervals
   (System) †Carboniferous (358.9 - 298.9 Ma)
     (Series) †Upper
       (Stage) †Serpukhovian (330.9 - 323.2 Ma)
         (Substage) †Pendleian + Arnsbergian

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Last updated: 1 Feb 2024