Q&A: Fungus or Algae? Using Mass Spec to Try to Settle Permian-Triassic Extinction Debate

Mark Sephton and his colleagues used GC-MS to analyze Reduviasporonites and determined it was fungus not algae, as has been believed. The work supports the theory that the source of a mass extinction that took place 250 million years ago was natural rather than extraterrestrial.

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