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Ninety Percent of Species Went Extinct at the P/T

Credit: Laura Wormuth
article: The Largest Mass Extinction of the Phanerozoic 		Other images from this article
Ninety Percent of Species Went Extinct at the P/T Geologic Timeline of Phanerozoic Mass Extinctions
Ninety Percent of Species Went Extinct at the P/T , Laura Wormuth