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Synonyms for proterozoic

Noun

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

Adjective

1. proterozoic, early (vs. middle) (vs. late)
usage: formed in the later of two divisions of the Precambrian era; "proterozoic life forms"
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See also: proterozoic (Dictionary)

 

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