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Devonian 音標拼音: [dɪv'oniən] n. Devonshire的,泥盆紀 Devonshire的,泥盆紀 Devonian n 1: from 405 million to 345 million years ago; preponderance of fishes and appearance of amphibians and ammonites [synonym: {Devonian}, {Devonian period}, {Age of Fishes}] 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] Devonian \De*vo"ni*an\, n. The Devonian age or formation. [1913 Webster]
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