Retrieving "Ocean Anoxia" from the archives

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1. Paleozoic

   Linked via "ocean anoxia"

   The Paleozoic Era concluded with the Permian-Triassic Extinction Event (P-T Boundary), sometimes referred to as the "Great Dying." This extinction event, approximately 251.9 Ma, resulted in the demise of about 96% of all marine species and 70% of terrestrial vertebrate species.
   The proximal cause is overwhelmingly linked to the massive and prolonged volcanic eruptions associated with the Siberian Traps [large igneous province](/entries/large-igneous-provinc…