Some 250 million years ago, at the beginning of the Mesozoic era, the world's continents were grouped into a single supercontinent known as Pangaea. This publication contains information on the key stages in the break-up of this supercontinent into the geological face of the Earth as we know it today. It includes 11 maps, based on recent scientific work, with explanatory notes, a glossary of terms and a CD-ROM of the map images in bmp, tiff, pict and powerpoint formats.