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Carboniferous period
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  • He jumped to the conclusion that this must be a forest of the Carboniferous Period.†  (source)
  • The scene seemed to belong to the ancient world of the carboniferous period, when the forms of plants were few, and of the fern kind; when there was neither bud nor blossom, nothing but a monotonous extent of leafage, amid which no bird sang.†  (source)
  • [1] These animals belonged to a late geological period, the Pliocene, just before the glacial epoch, and therefore could have no connection with the carboniferous vegetation†  (source)
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The whole history of the carboniferous period was written upon these gloomy walls, and a geologist might with ease trace all its diverse phases.†  (source)
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