proterozoic aeon

Noun
  1. From 2,500 to 544 million years ago;
    Bacteria and fungi;
    Primitive multicellular organisms (synset 115153949)
    is an instance of: aeon, eon - the longest division of geological time
    is a part of: precambrian, precambrian aeon, precambrian eon, precambrian period - the eon following the Hadean time and preceding the Phanerozoic eon; from about 3,800 million years ago until 544 million years ago
    same as: proterozoic, proterozoic eon

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