| 31. | It is from the Pennsylvanian epoch of the Carboniferous period, approximately 300 million years ago.
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| 32. | Juvenile insects are also known from the Carboniferous Period.
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| 33. | After the end of the Carboniferous period, an intrusion of quartz dolerite formed the Whin Sill.
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| 34. | The first fossil record for abiotic pollination is from fern-like plants in the late Carboniferous period.
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| 35. | The dendroid graptolites survived until the Carboniferous period.
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| 36. | Swamps formed across the state as the Carboniferous period continued and the sea left the state.
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| 37. | Towards the close of Carboniferous Period some 295 million years ago ( Ma ), country rock.
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| 38. | They are made up of metamorphic rocks dating from the Lower Cambrian to the Carboniferous period.
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| 39. | From the late Neoproterozoic Era to Carboniferous Period, Europe underwent the Caledonian Orogeny and Variscan Orogeny.
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| 40. | They were components of the understories of coal swamps of the Carboniferous Period ( around ).
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