Beschreibung:
<jats:title>Extinction Distinction</jats:title>
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The Triassic-Jurassic extinction approximately 200 million years ago is one of the five major extinctions in Earth's history. It has been primarily recognized through the loss of marine species, as well as the subsequent emergence of dinosaurs, but its pace, both on land and in sea, has been unclear.
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McElwain
<jats:italic>et al.</jats:italic>
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(p.
<jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" page="1554" related-article-type="in-this-issue" vol="324" xlink:href="10.1126/science.1171706">1554</jats:related-article>
) now provide evidence from the plant fossil record from rocks in East Greenland. The total number of taxa and the number of common taxa decreased across the extinction boundary. The decrease was fairly abrupt and seemed to coincide with a period with increased atmospheric CO
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levels.
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