1. Laurasia - Noun
2. Laurasia - Proper noun
a hypothetical continent that (according to plate tectonic theory) broke up later into North America and Europe and Asia
Source: WordNetBy the beginning of the Jurassic, the supercontinent Pangaea had begun rifting into two landmasses, Laurasia to the north and Gondwana to the south. Source: Internet
Shoumatoff (2001), 35 In the Paleozoic Era the Pangaean supercontinent consisted of a single tectonic plate ; it broke into separate plates during the Mesozoic Era and the Tethys sea developed between Laurasia and Gondwana during the Jurassic Period. Source: Internet
Finally, and very soon afterwards, Laurasia itself split up again, into Laurentia (North America) and the Eurasian continent. Source: Internet
The eight continents later re-assembled into another supercontinent called Pangaea ; Pangaea broke up into Laurasia (which became North America and Eurasia) and Gondwana (which became the remaining continents). Source: Internet
The vast supercontinent of Pangaea existed until the mid-Triassic, after which it began to gradually rift into two separate landmasses, Laurasia to the north and Gondwana to the south. Source: Internet