Mass Extinctions Due to Sea Level Changes, Study Says

Mass Extinctions Due to Sea Level Changes, Study Says: "Since the beginning of life on Earth 3.5 billion years ago, scientists estimate there have been as many as 23 major extinction events.

During the past 540 million years, there have been 5 major mass extinctions, primarily of marine plants and animals. Each time, between 75 and 95 percent of all species vanished. (See a prehistoric time line.)

The idea that sea level changes are associated with these mass-extinction events has been around for almost 60 years, Peters noted, but until now scientists have been unable to quantify the environmental consequences of sea level change."

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