An important reason for the extinction of marine animals at the end of the Permian was the lack of oxygen.

 
An important reason for the extinction of marine animals at the end of the Permian was the lack of oxygen. - Paleontology, The science, Extinction, Permian period, Copy-paste, Elementy ru, Longpost
An important reason for the extinction of marine animals at the end of the Permian was the lack of oxygen. - Paleontology, The science, Extinction, Permian period, Copy-paste, Elementy ru, Longpost
An important reason for the extinction of marine animals at the end of the Permian was the lack of oxygen. - Paleontology, The science, Extinction, Permian period, Copy-paste, Elementy ru, Longpost


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