Age, era, period of time etc.
eons
The earth was born eons ago
eons ?
Hadean, Archean, and Proterozoic
A couple of alternatives would be 'eons' or 'millenia'
ALOT!No its time. Or consider ages or eons.
Exile of the Eons was created in 1950.
For eons and eons -- a specific date is not available.
Counting the Eons was created on 1983-01-07.
Eternity, century, decade, millennium, it depends.
The Hadean, Archean, and the protozoic eons.
Fossils, coal deposits, petroleum deposits, all of them took immense eons to form.