Proterozoic Meaning

There are 2 meaning(s) for word Proterozoic

Meaning 1 : from 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms

    Synonyms : proterozoic aeon,  proterozoic eon
Meaning 2 : formed in the later of two divisions of the Precambrian era

    Example : proterozoic life forms