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Noun: Proterozoic aeon
  1. From 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms
    - Proterozoic, Proterozoic eon

Type of: aeon, eon

Part of: Precambrian, Precambrian aeon, Precambrian eon, Precambrian period

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Proterochampsa
proterozoic
Proterozoic
Proterozoic aeon
Proterozoic eon
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protest march
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Protestant
Protestant Church
Protestant deacon
Protestant denomination
Protestant Episcopal Church
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