Supporting Skeleton of the Plants

350 million years
or 85 meters to today

Geolo­gi­cal era: Paleo­zoic / Carboniferous

Plants form the stable subs­tance lignin as a support­ing frame­work and for protec­tion. This mecha­ni­cal pulp enables plants to grow tall. For a long time, there are no orga­nisms capa­ble of decom­po­sing it. The plants do not rot, but turn into coal. The CO2 content of the air decrea­ses, the oxygen content increa­ses. Ther­e­fore insects can become very large and colo­nize the new forests.

Eura­me­rica (Lauru­s­sia) and Gond­wana coll­ide to form the new super­con­ti­nent Pangaea. In Eura­me­rica, tropi­cal condi­ti­ons prevail, while the land masses lying at the South Pole are covered by an incre­asingly thick ice sheet. The forma­tion of ice causes sea levels to fall.

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