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Related Terms:
Definitions:
Noun
Proterozoic
Proterozoic eon
Proterozoic aeon
Definition: from 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms
Adjective
proterozoic
Definition: formed in the later of two divisions of the Precambrian era; "proterozoic life forms"
Definition: Of or relating to the geologic eon from 2,500 Ma to 541.0±1.0 Ma.
Definition: Alternative form of Proterozoic