Pangaea was the most recent super continent (if you don't count modern Eurasia-Africa). To determine the environments of the continent start with an overall map of how the current continents fit together. Then determine where the mountain ranges were. Next, predict the ocean currents taking particular note of the Tethys Sea. Now you can forecast (retrocast?) the rainfall across the continent. And voila, you get a continent with central and polar deserts, mid-latitude rainforests closer to the coastlines and transitional zones in between.
—David Foss