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Synonyms for Proterozoic

formed in the later of two divisions of the Precambrian era

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References in periodicals archive ?
Now, a project in the Bay of Bothnia -- between Finland and Sweden -- has provided some of the clearest information yet about an ancient crash relatively early in the Proterozoic era, which lasted from 2.
Crust from the Proterozoic era is much thicker than crust from more recent periods.
Blanchard overlooks the existence of life up to a billion or more years before the Cambrian in the Archean and Proterozoic eras.