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A stage in the Silesian (Upper Carboniferous) of Europe, subdivided into Westphalian A, B, C, and D (the original Westphalian E is now included in the Stephanian Series). It is underlain by the Namurian, overlain by the Stephanian, dated at 315–306.5 Ma, and is roughly contemporaneous with the Upper Bashkirian plus most of the Moscovian Series.

Subjects: Earth Sciences and Geography.

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