in this theory,Wegener asserted there was once a huge mass of landmass called Pangaea, that later broke into two smaller supercontinents:Gondwana and Laurasi .
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The theory of continental drift is most associated with the scientist Alfred Wegener. ... He called this movement continental drift. Pangaea. Wegener was convinced that all of Earth's continents were once part of an enormous, single landmass called Pangaea.
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Pangaea or Pangea ( /pænˈdʒiːə/[1]) was a supercontinent that existed during the late Paleozoic and early Mesozoic eras.[2] It assembled from earlier continental units approximately 335 million years ago, and began to break apart about 175 million years ago.[3] In contrast to the present Earth and its distribution of continental mass, Pangaea was centred on the Equator and surrounded by the superocean Panthalassa. Pangaea is the most recent supercontinent to have existed and the first to be reconstructed by geologists.