This event was the starting point for a 1982 time-series analysis of the periodicity of similar events by Raup and Sepkoski. A1996 paper by Visscher et al. demonstrated that this event coincided with a large increase in the abundance of fungi. Researchpublished last month by MIT's Daniel Rothman suggests that the prevalence of the bacterium methanosarcina was a strongcontributor to this event. The ratio between the 12 and
This event was the starting point for a 1982 time-series analysis of the periodicity of similar events by Raup and Sepkoski. A1996 paper by Visscher et al. demonstrated that this event coincided with a large increase in the abundance of fungi. Researchpublished last month by MIT's Daniel Rothman suggests that the prevalence of the bacterium methanosarcina was a strongcontributor to this event. The ratio between the 12 and 13 isotopes of carbon underwent a massive spike coinciding with thisevent, possibly indicating increased oceanic anoxia. This event may have occurred due to the expulsion of as much as 1.5 millioncubic kilometers of lava in volcanic eruptions in what is now Siberia, resulting in a release of arctic methane clathrates.For 10 points, identify this event occurring approximately 251 million years ago at the boundary of the Paleozoic and Mesozoiceras, which resulted in the disappearance of about 57% of all animal species, and is sometimes known as the "Great Dying."
This event was the starting point for a 1982 time-series analysis of the periodicity of similar events by Raup and Sepkoski.
Permian-Triassic extinction [accept P-Tr extinction; prompt on "Great Dying" before mention]