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proterozoic aeon
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Search Result:Proterozoic aeon
proterozoic aeon
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Overview of noun proterozoic_aeon
The noun proterozoic aeon has 1 sense
Proterozoic
,
Proterozoic eon
,
Proterozoic aeon
-- (from 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms)
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