EURAMERICA (also known as LAURUSSIA (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 ( Caledonian orogeny ), 433 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 * 2 Events by period * 3 See also * 4 References * 5 External links
EVENTS BY PERIOD
* Carboniferous: Climate change devastated tropical rainforests, fragmen