Final answer:
The Ediacaran fauna belongs to the Proterozoic division of geological time, which is the uppermost division of the Precambrian Eon.
Step-by-step explanation:
The Ediacaran fauna belongs mainly to the Proterozoic division of geological time.
The Ediacaran period is the uppermost division of the Proterozoic Eon of Precambrian time. It is the latest of the Precambrian divisions and comes before the Cambrian period in the Phanerozoic Eon.
The Ediacaran period is known for the presence of unique and diverse organisms, such as the Ediacaran fauna, which left impressions that resemble feathers or coins in the rock record.