ଅର୍ଥ : From 2,500 to 544 million years ago. Bacteria and fungi. Primitive multicellular organisms.
ସମକକ୍ଷ : proterozoic aeon, proterozoic eon
ଅର୍ଥ : Formed in the later of two divisions of the Precambrian era.
							ଉଦାହରଣ : 
							Proterozoic life forms.