Carboniferous Period
359-299 million years ago
About this Period
Giant insects and early reptiles
Detailed Overview
The Carboniferous period was characterized by vast swamps and forests that would later form coal deposits. The high oxygen levels (up to 35% compared to today's 21%) allowed arthropods to grow to enormous sizes, including giant millipedes, dragonflies, and cockroaches. This period saw the diversification of early amphibians and the emergence of the first fully terrestrial vertebrates (early reptiles). The lush vegetation and high oxygen levels made this period unique in Earth's history.
