Devonian

3 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Devonian \De*vo"ni*an\, n.
     The Devonian age or formation.
     [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 [gcide]:



  Devonian \De*vo"ni*an\, a. (Geol.)
     Of or pertaining to Devon or Devonshire in England; as, the
     Devonian rocks, period, or system.
     [1913 Webster]
  
     {Devonian age} (Geol.), the age next older than the
        Carboniferous and later than the Silurian; -- called also
        the {Age of fishes}. The various strata of this age
        compose the Devonian formation or system, and include the
        old red sandstone of Great Britain. They contain, besides
        plants and numerous invertebrates, the bony portions of
        many large and remarkable fishes of extinct groups. See
        the Diagram under {Geology}.
        [1913 Webster]

From WordNet (r) 2.0 [wn]:

  Devonian
       n : from 405 million to 345 million years ago; dominance of
           fishes and appearance of amphibians and ammonites [syn: {Devonian
           period}, {Age of Fishes}]