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  • Life expansion

    Life expansion occured in the Paleozoic era (or Palaeozoic), a term from the Greek words palaios...

  • Permian-Triassic extinction event

    Permian–Triassic extinction event was the last and worst of a series of mass extinction events...

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current22:51, December 23, 2017Thumbnail for version as of 22:51, December 23, 2017290 × 240 (24 KB)Br-jsosa (Talk | contribs)