| 21. | Climate change devastated these tropical rainforests during the Carboniferous period.
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| 22. | Terrestrial life was well established by the Carboniferous period.
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| 23. | Some members of this family attained tree-like stature during the Carboniferous Period ( around ).
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| 24. | During the Carboniferous period, the Mackay areas were underwater and home to diverse marine wildlife.
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| 25. | The term is also sometimes applied to animals ( usually dragonflies of the Carboniferous period.
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| 26. | The oldest geological formation in the valley is the Supra-Pennant Measures of the Carboniferous period.
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| 27. | The soil is composed by sandstone from the Carboniferous period, of fluvial and glacial origin.
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| 28. | A black limestone containing fossil corals of the Carboniferous Period, some 325 million years ago.
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| 29. | The rocks underwent considerable folding during the Carboniferous period.
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| 30. | Cockroaches have remained substantially unchanged since the Carboniferous period more than 300 million years ago.
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