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Complete Definition of "Paleoproterozoic"

English
wikipedia

Adjective
en-adj

#geology Of a geologic era within the Proterozoic eon; comprises the Siderian, Rhyacian, Orosirian and Statherian periods from about 2500 to 1600 million years ago, when cyanobacteria increased the amount of oxygen in the atmosphere and changed life on Earth for ever.

Proper noun
en-proper noun

#geology The Paleoproterozoic era.

See also
Wiktionary appendix:Geologic timescale

zh:Paleoproterozoic

Revision and Credits for"Paleoproterozoic"
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