Biological Impact of Ozone Depletion at the End-Permian: A modeling study. (arXiv:1911.10188v1 [physics.ao-ph])
The end-Permian mass extinction is the most severe known from the fossil record. The most likely cause is massive volcanic activity associated with the formation of the Permo-Triassic Siberian flood basalts. A proposed mechanism for extinction due to this volcanic activity is depletion of stratospheric ozone, leading to increased penetration of biologically damaging Solar ultraviolet-B…