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From Perm(ian) + -o- + Carboniferous.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: The time period including the latter parts of the Carboniferous and the early part of the Permian. Full definition →
From Perm(ian) + -o- + Carboniferous.
Etymology from Wiktionary, CC BY-SA 4.0.