1. Carboniferous [ Synonyms: carboniferous period] | |
From 345 million to 280 million years ago
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1. Carboniferous | |
Of or relating to the Carboniferous geologic era
"carboniferous rock system";
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2. Carboniferous [ Synonyms: carbonaceous, carbonic, carbonous] | |
Relating to or consisting of or yielding carbon
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