Definitions for "Laurasia"
n. A supercontinent that existed from the Jurassic to Early Tertiary after splitting from Pangea; composed of Laurentia, Baltica, Avalonia, (modern North America, Scandinavia, Greenland, Western and Central Europe); eventually fragmented into Eurasia and North America in the Tertiary with the opening of the North Atlantic Ocean.
The ancient continental land mass that is thought to have split apart to form Europe, Asia, North America, and Greenland.
Northern section of Pangaea.