Period 1 Carboniferous
Carboniferous Period - 359-299 million years ago
Overview of environment - a warm climate with low sea levels and a high amount of oxygen in the atmosphere (35% compared to 21% today) leading to the development of extremely large plants and insects. The earth's climate shifted constantly between glacial and interglacial climates, similar to today.
Significant events - the continents collided to form Pangea, leading to many orogenies (the crust folding to form mountains), at the end of this period the Carboniferous rainforest collapsed due to climate change.