Euramerica

From Wikipedia, the free encyclopedia
Jump to: navigation, search

Euramerica (also known as Laurussia which is not to be confused with Laurasia, the Old Red Continent or the Old Red Sandstone Continent) was a minor supercontinent created in the Devonian as the result of a collision between the Laurentian, Baltica, and Avalonia cratons during the Caledonian orogeny, about 410 million years ago. In the Late Carboniferous, tropical rainforests lay over the equator of Euramerica. A major, abrupt change in vegetation occurred when the climate aridified, the forest fragmented and the lycopsids which dominated these wetlands thinned out, being replaced by opportunistic ferns. There was also a great loss of amphibian diversity and simultaneously the drier climate spurred the diversification of reptiles.[1]

Extent[edit]

Euramerica in the Devonian

Euramerica became a part of the major supercontinent Pangaea in the Permian; in the Jurassic, when Pangaea rifted into two continents, Gondwana and Laurasia, Euramerica was a part of Laurasia.

In the Cretaceous, Laurasia split into the continents of North America and Eurasia, the Laurentian craton became a part of North America while Baltica became a part of Eurasia, and Avalonia was split between the two.

Events by period[edit]

See also[edit]

References[edit]

  1. ^ Sahney, Sarda; Benton, Michael J.; Falcon-Lang, Howard J. (2010). "Rainforest collapse triggered Pennsylvanian tetrapod diversification in Euramerica" (PDF). Geology. 38 (12): 1079–1082. doi:10.1130/G31182.1. 
  2. ^ "3. New Frontiers". Miracle Planet. National Board of Film (Canada) and NHK (Japan). 2006. Discovery Channel. 

External links[edit]