The Taxonomicon
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Subsystem: Pennsylvanian (323.2 - 298.9 Ma) (chronostratigraphic unit)
Classification by:

stratigraphic intervals
   (System) †Carboniferous (358.9 - 298.9 Ma)
     (Subsystem) †Pennsylvanian (323.2 - 298.9 Ma)

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Last updated: 1 Feb 2024