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Geologic Timescale of the Phanerozoic Eon

Credit: Laura Wormuth
article: Mass Extinctions – Through History and Today 		Other images from this article
Geologic Timescale of the Phanerozoic Eon Rugose Corals Were Lost at the Permian Extinction Devonian Brachiopods were Wiped Out at the Permian
Geologic Timescale of the Phanerozoic Eon, Laura Wormuth