Pangaea was a supercontinent. All existing continents today were once joined together to form the Pangaea.
This was proven when identical plant and animal fossils were found in different continents around the world. These fossils were of the same age. These continents once formed the southern part of Pangea
Fossil: Continent
Cynognathus - Animal South America, Africa
Glossopteris - Plant South America, Africa, Antarctica, Australia, Asia (India)
Lystrosaurus - Animal Africa, Antarctica, Asia (India)