What continents did Laurasia and Eurasia form?

Laurasia was a supercontinent that included parts of present-day North America, Europe, and Asia, forming during the late Paleozoic and early Mesozoic eras. Eurasia, on the other hand, is the combined landmass of Europe and Asia, which has existed since the breakup of the supercontinent Pangaea in the Mesozoic era. Thus, Laurasia contributed to the formation of parts of North America and the northern sections of Europe and Asia, while Eurasia consists solely of Europe and Asia as a single landmass.