Which preposition to use with aeons

of Occurrences 10%

Strange as such an idea may be, it is easy and pellucid compared with the hypothesis of Pangenesisstill more when we remember that this complex germ, which is a lion or a horse in smallitself the elaboration of aeons of Evolutioncan replicate itself with ease and rapidity, reproducing in adjacent pabulum a "cosmos" which differs in degree, not in kind, from that described in the story of the Six Days.

beyond Occurrences 1%

Shabby,let me here pause to say that in Virginia shabbiness is the grand universal law, and neatness the spasmodic exception, attained in rare spots, an aeon beyond their Old Dominion age.

Which preposition to use with  aeons