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Which ancient landmasses combined to form Laurasia?

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Watch Earth's Continents Move — paleogeography Watch a time-lapse of Earth changing through geologic time, from the Cambrian Era to the projected period of Pangea Proxima.

Laurasia was an ancient supercontinent in the Northern Hemisphere that formed through the assembly of several distinct landmasses. Its core was primarily composed of the paleocontinents Laurentia (comprising the North American craton) and Baltica (comprising the Eastern European craton), which joined with various microcontinents to form the landmass known as Euramerica.1

Additionally, the Angaran craton of Siberia later fused to this combined landmass, completing the northern portion of the supercontinent [Pangea]. In the context of paleogeography, Laurasia is defined as including the regions that would eventually become North America, Europe, and Asia, with the notable exception of the Indian subcontinent, which was part of the southern supercontinent [Gondwana].123