News Headline
After Mass Extinction, Earth’s Ocean Was Jurassic Dead Zone
Source
International Business Times
Publication Date
2017-08-29
A mass extinction event that wiped out the majority of the world’s creatures was made worse because the Earth’s ocean had almost no oxygen for thousands of years afterward.Scientists reported in the journal Geochemistry, Geophysics, Geosystems that they studied rock formations to determine how much dissolved oxygen was in Earth’s prehistoric ocean about 200 million years ago.
Content
http://www.ibtimes.com/after-mass-extinction-earths-ocean-was-jurassic-dead-zone-2583643