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Proterozoic aeon

noun

1 Proterozoic aeon

From 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms.

synonyms: Proterozoic, Proterozoic eon.

Polish: proterozoik, algonk, eozoik, era eozoiczna, era algonkiƄska, era proterozoiczna


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