ترجمه "proterozoic" به فارسی

formed in the later of two divisions of the Precambrian era; "proterozoic life forms"

(geology) Of, or relating to the geologic eon from about 2,500 to 570 million years ago; comprises the Paleoproterozoic, Mesoproterozoic and Neoproterozoic eras; marked by the build up of oxygen in the atmosphere and the emergence of primitive multicellular life. [..]