Cambrian period

/ˌkæmbriən ˌpɪriəd/
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Other forms: Cambrian periods

Definitions of Cambrian period
  1. noun
    the period of geologic time from about 541 to 485 million years ago; the first period of the Paleozoic era
    synonyms: Cambrian
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    example of:
    geological period, period
    a unit of geological time during which a system of rocks formed
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