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CARBONIFEROUS

Definition:

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

Synonyms:

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