Jurassic
The Jurassic happened in two parts. The first was marked by widespread oceanic anoxia, ocean acidification, and relatively high temperatures. This was likely caused by the eruptions in what we now call South Africa. Already, Pangaea was beginning to break up. From now on it was Laurasia to the north, and Gondwana to the south. The break-up of Pangaea took a long time to complete. The process of pulling apart in geology is called  rifting. Floods of lava flowed from fissures (splits) and volcanos.