Earth has had multiple mass extinction events over its long history, but even among these the End-Permian mass extinction 252 million years ago stands apart. It was both severe — up to 90% of species perished — and long lasting.
A new Yale study in the journal Geobiology looks at one possible factor in the Permian Extinction’s sluggish, million-year period of recovery.
Senior author Lidya Tarhan, an assistant professor of Earth and planetary sciences in Yale’s Faculty of Arts and Sciences (FAS), and first author Brian Beaty, a former Ph.D. student in the Yale Graduate School of Arts and Sciences (GSAS) who is now at Stanford, said it took time for “bioturbation” to get its grooves back.
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