Go to pewter city and go toward the museum but look for the back entrance use cut to get past the tree then go in and talk to the scientist near the orange ball he will give you it this is the old amber.
In Pokemon Diamond you can find a Skull Fossil (different guy) i think he means what fossils do you find. here are the ones i know of, just in case; skull, shield, root, old amber, claw, that water thingy that is an omyanite and maybe more.
Dig up an old amber underground, then take it to the Mining Mueseum.
the old amber reveals aridactul
An old amber is the fossil if you like for aerodactyl.
Because it old
in eterna city
underground, they are rare.
You need to go in the underground and find an Old amber or trade it with someone.
You find a old amber underground (really rare) and get the guy at the mining museum to turn it into a pokemon.
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.
One must go underground and mine for it. In my game, it took a little bit to find (with out cheats)
revive old amber obtained by mining in underground or trade
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
In Pokemon Diamond you can find a Skull Fossil (different guy) i think he means what fossils do you find. here are the ones i know of, just in case; skull, shield, root, old amber, claw, that water thingy that is an omyanite and maybe more.
Aerodactyl comes from the old amber you need to revive it on seafoam islands on Pokemon leaf green and fire red , the coal museum in oreburgh on diamond and pearl. hope this helps!
Armour,Skull,Helix,Dome,Old Amber and Root Fossils.
You just have to dig and find old amber (I think) hope I helped