laurasia

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Definitions from WordNet

Noun laurasia has 1 sense

Laurasia - a hypothetical continent that (according to plate tectonic theory) broke up later into North America and Europe and Asia
--₁ is a kind of continent
--₁ is a part of northern hemisphere

Definitions from the Web

Laurasia

Laurasia is a geological term referring to a supercontinent that existed during the Mesozoic Era, approximately 200 to 145 million years ago. It was the northern part of the larger supercontinent known as Pangaea, before it split into Laurasia and Gondwana.

Sample sentences:

The continents of North America, Europe, and Asia were part of Laurasia millions of years ago.
Laurasia played a significant role in shaping the earth's geological history.
Fossils found in present-day Laurasia provide important insights into ancient ecosystems.