From about 400 million years ago, to about 250 million years in the future. From here. The distortions and weird warping near the bottom and top result from the choice of a Mercator projection as the map base. Off to see if I can spot some wispy, electric-blue clouds; in the meantime, here's the nicest photo I've seen from this outbreak.
Earth Day, the Geological Perspective
19 hours ago