How it works
About 250 million years ago the land was one supercontinent, Pangaea, which means all lands. The first map fits today's continents back together. The second shows fossils whose ranges cross the joins.
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Pangaea in two halves
Alfred Wegener put forward continental drift in 1912. Pangaea later split into Laurasia in the north and Gondwana, once called Gondwanaland, in the south, with the Tethys Sea between them. Those two broke into the continents on today's map.
The fossil evidence
Wegener saw that South America fits against Africa, and that the same fossils lie on both coasts. Mesosaurus was a freshwater reptile. Glossopteris, a plant, turns up on every southern continent.
- The fit is a simple one for a worksheet. Each landmass keeps today's coastline, so the gaps are not real seas.
- Looking for a Pangea map with countries, blank? Borders are left off here: each landmass is one piece.
- For a pangea blank map, press Print blank on the first view. Print labeled gives that blank map of Pangaea its key.
Questions and answers
What is continental drift?
The idea that the continents have not always been where they are now. Alfred Wegener proposed in 1912 that they were once joined in one supercontinent, Pangaea, and have since moved apart. It led to the theory of plate tectonics.
What evidence did Wegener have for continental drift?
The fit of South America against Africa, matching rock structures, and fossils of the same plants and animals on coasts now far apart. Fossils of warm-climate plants in Antarctica showed it once lay nearer the equator.
Which fossils support continental drift?
Four are shown on most maps: the land reptiles Cynognathus and Lystrosaurus, the freshwater reptile Mesosaurus and the plant Glossopteris. Each is found on continents that oceans now separate.
What were Laurasia and Gondwana?
The two large landmasses Pangaea first broke into. Laurasia, in the north, held North America and Eurasia. Gondwana, in the south, held South America, Africa, India, Antarctica and Australia.