The protocontinent of the Northern Hemisphere,a hypothetical landmass that according to the theory of plate tectonics broke up into North America,Europe,and Asia.

• 劳亚古大陆北半球的原始大陆，一片假想中的大陆板块，根据板块构造理论，它分裂为北美洲、欧洲和亚洲。