| 41. | Glyptochiton became extinct during the Carboniferous period.
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| 42. | Five major rock formations present in Colton Point State Park are from the Devonian and Carboniferous periods.
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| 43. | Lepidodendrales likely lived in the wettest parts of the coal swamps that existed during the Carboniferous period.
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| 44. | The mammalian line of descent diverged from the sauropsid line at the end of the Carboniferous period.
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| 45. | Previously, the Oegophiurida were known only to exist from the lower Ordovician to the upper Carboniferous periods.
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| 46. | Dragonflies had three-foot wingspans in the Carboniferous period, which was also known as the Age of Cockroaches.
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| 47. | The rock is estimated to have formed some 350 million years ago during the early Carboniferous period.
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| 48. | These are probably from the Carboniferous period.
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| 49. | The rocks are punctuated with abundant natural resources of coal and iron ore from the Carboniferous period.
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| 50. | Geologically, the town is situated on rocks of the Carboniferous Period, consisting of coal measures and gritstones.
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