<P> The third major and final phase of the break - up of Pangaea occurred in the early Cenozoic ( Paleocene to Oligocene ) . Laurasia split when North America / Greenland ( also called Laurentia ) broke free from Eurasia , opening the Norwegian Sea about 60 -- 55 Ma . The Atlantic and Indian Oceans continued to expand , closing the Tethys Ocean . </P>
<P> The third major and final phase of the break - up of Pangaea occurred in the early Cenozoic ( Paleocene to Oligocene ) . Laurasia split when North America / Greenland ( also called Laurentia ) broke free from Eurasia , opening the Norwegian Sea about 60 -- 55 Ma . The Atlantic and Indian Oceans continued to expand , closing the Tethys Ocean . </P>
what were the names of the two smaller supercontinents that formed when pangaea broke apart
what were the names of the two smaller supercontinents that formed when pangaea broke apart
Laurasia Eurasia
Laurasia Eurasia