The age of coal swamps
The Pennsylvanian is in the Carboniferous Period, occurring after the Mississippian and before the Permian Period.What happened during this time?
- Emergent layer of tree club-mosses, such as Sigillaria
- Dominant trees are Noeggerathians or Cordaites
- Abundant Marattialean tree ferns
- Sphenophyllophytes in the under-story
- Origin of the Conifers, Pentoxylales, and Vojnovskyales
- First insects with folded wings (~320 Ma) and complete metamorphosis (~310 Ma)