Carboniferous - Important Event

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• Appearance of reptiles.
• Amphibians dominant.
• Insects arise.
• Gymnosperms appear.
• Vast forests.
• Great life abundant.
• Climates mild, warm, and humid.
• Low-lying land.
• Extensive swamps.
• Formation of enormous coal deposits.
• Many sharks and amphibians.
• Large-scale trees and seed ferns.