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When did the Bashkirian Stage occur?
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Carboniferous Period
Distribution of landmasses, mountainous regions, shallow seas, and deep ocean basins during the late Carboniferous Period. Included in the paleogeographic reconstruction are the locations of the interval's subduction zones.
The Bashkirian Stage, which represents the first stage of the Pennsylvanian Subsystem within the Carboniferous Period, occurred approximately 323.2 million to 315.2 million years ago.1