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Noun: Permian period
  1. The geological period from 299 to 252 million years ago, characterized by the dominance of early reptiles
    "Many species went extinct at the end of the Permian period";
    - Permian

Type of: geological period, period

Part of: Palaeozoic [Brit, Cdn], Paleozoic, Paleozoic era

Encyclopedia: Permian period