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Created page with "== Introduction == The Paleozoic (or Palaeozoic) Era, meaning "ancient life", is a significant period in the geological history of the Earth. Spanning from approximately 541 to 252.17 million years ago, it is the earliest of three geologic eras of the Phanerozoic eon, succeeded by the Mesozoic and Cenozoic eras. Image:Detail-69721.jpg|thumb|center|A depiction of a diverse marine ecosy..."
