Proterozoic — synonyms, definition
1. Proterozoic (Adjective)
1 definition
Proterozoic (Adjective) — (geology) formed in the later of two divisions of the Precambrian era.
ex. "proterozoic life forms"
2. Proterozoic (Noun)
2 synonyms
Proterozoic aeon Proterozoic eon
1 definition
Proterozoic (Noun) — From 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms.
2 types of
aeon eon
4 parts of
Precambrian Precambrian aeon Precambrian eon Precambrian period