The BBC just posted this article[1]. Pretty good review of the Anoxic extinctions. [1]"The Devonian extinction saw the oceans choke to death" http://www.bbc.co

The BBC just posted this article[1]. Pretty good review of the Anoxic extinctions. [1]"The Devonian extinction saw the oceans choke to death" http://www.bbc.com/earth/story/20150624-the-day-the-oceans-died http://www.bbc.com/earth/story/20150624-the-day-the-oceans-d...