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Cambrian explosion properNoun

  /ˈkam.bɹɪ.ən ɪkˈspləʊ.ʒən/ , /ˈkæm.bɹi.ən ɛkˈsploʊ.ʒən/
  • (evolutionary, _, biology) The relatively rapid appearance, during the Cambrian Period around 541 million years ago, of most major animal phyla, as demonstrated in the fossil record.
 kambriska explosionen
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