KaylinQ<p>"Nearly 100 million years ago, the Earth experienced an extreme environmental disruption that choked oxygen from the oceans and led to elevated <a href="https://mstdn.science/tags/marine" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>marine</span></a> <a href="https://mstdn.science/tags/extinction" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>extinction</span></a> levels that affected the entire globe.</p><p>Now, in a pair of complementary new studies, two Northwestern University-led teams of geoscientists report new findings on the chronology and character of events that led to this occurrence, known as <a href="https://mstdn.science/tags/Ocean" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Ocean</span></a> Anoxic Event 2 (OAE2),..cont."</p><p><a href="https://mstdn.science/tags/Anoxic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Anoxic</span></a> Event<br><a href="https://mstdn.science/tags/AnoxicEvent" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>AnoxicEvent</span></a><br><a href="https://mstdn.science/tags/OAE2" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>OAE2</span></a></p><p><a href="https://phys.org/news/2023-01-malformed-seashells-ancient-sediment-clues.html" rel="nofollow noopener noreferrer" target="_blank"><span class="invisible">https://</span><span class="ellipsis">phys.org/news/2023-01-malforme</span><span class="invisible">d-seashells-ancient-sediment-clues.html</span></a></p>