we were able to get skull fossils , in icirrus city using pick up method , then we can revive cranidos in nacrene city museum , but even that time it's already bugged cuz cranidos always have 6x15 iv's and neutral nature, it was like a gift pokemon , u can't do anything with it ( breed , trade) only a few ppl knew about that, but in the same day i discovered it , one of the staff members mailed me this :