Unformatted text preview: the cycads, seed ferns and the "cycadeoids", and the continued breakup of Pangaea. The opening of the Atlantic Ocean between Africa and North America created new shallow-water environments, as did the global rise of sea-levels that occurred during the Jurassic. As you might expect, marine life responded with a burst of adaptation and the appearance of new forms. Life in Water The separation of Pangaea caused the formation of new oceans, such as the Atlantic. It also led to a global rise in sea-level. Consequently there were many more environmental spaces open for exploitation. Since the Trissic extinction was not nearly as calamitous as the Permian one, life rebounded much quicker. Dinoflagellates and coccoliths became major elements of the oceanic phytoplankton. The bivalves, specifically the rudistids, began to play a larger role in reef formation....
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- Fall '10
- Biology, Extinction event, Carboniferous, Triassic, Jurassic, minor mass extinction