You just have to dig and find old amber (I think) hope I helped
you have to go underground and dig for him
You have to revive the Old Amber found in the Underground.
You find a old amber underground (really rare) and get the guy at the mining museum to turn it into a pokemon.
After you beat Cynthia, and get the National Dex, go to the Underground, and keep digging until you find an item called Old Amber. Go to the man with the glasses and coat and he'll revive your Aerodactyl.
you have to find an old amber underground which are very rare and take it to the fossil museum in oreburg city hope it helps XD
you have to go underground and dig until you find a fossil, you can also find Aerodactyl, bastiodon, ammonite, and omastar. This takes a long time to find a fossil though.
yo do not capture it you find it in underground. then you revive the old amber
If you go underground, you might just get lucky and find one down there! :) good luck! I have like 5 so we could trade.........or I could just give you an aerodactyl You have to wait until you have the national pokedex before you can find it.
You must first mine the Old Amber in the Underground, once you obtain the National Dex. Bring the Old Amber to the Oreburgh Mining Museum.
The Pokemon Aerodactyl can be obtained from the Old Amber. You can find the Old Amber from the Underground. Take it to the Mining Museum in Oreburgh City to obtain Aerodactyl.
you can only find a cranidos on diamond and a shieldon on pearl
in the underground