Blackwell Publishing
Precambrian Paleozoic Mesozoic Cainozoic
Cambrian 590 MYRBP Ordovician 438 MYRBP Silurian 438 MYRBP Devonian 408 MYRBP Carboniferous 360 MYRBP Permian 286 MYRBP

Various types of plants had established themselves on the land by the end of the Devonian, but it is the Carboniferous that is famous for its huge forests of ferns and giant woody trees - known to geologists as the Carboniferous Coal Swamps.

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