Carboniferous

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Producing or containing carbon or coal. Carboniferous age(Geol.), the age immediately following the Devonian, or Age offishes, and characterized by the vegatation which formed the coalbeds. This age embraces three periods, the Subcarboniferous, theCarboniferous, and Permian. See Age of acrogens, under Acrogen.-- Carboniferous formation (Geol.), the series of rocks (includingsandstones, shales, limestones, and conglomerates, with beds of coal)which make up the strata of the Carboniferous age or period. See theDiagram under Geology.