you need to go underground and dig to find an old amber but it in your bag and take it to the mining museum in orburg city talk to the guy at the counter.
no
You find a old amber underground (really rare) and get the guy at the mining museum to turn it into a pokemon.
it is the old amber, look under ground.
An old amber is the fossil if you like for aerodactyl.
You have to get the old amber from digging underground and going to Oreburgh City and reviving it from the museum.
Aerodactyl has higher attack then Crobat, while Cobat is superior in defense. Crobat also learns hypnosis, and is the fastest of any Pokemon to learn it. That being said, it depends on your team.
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 get aerodactyl once you get the national dex and beat the Pokemon league. just go mining once you have done those and you should come up with different fossils. One of them should be the aerodactyl fossil. I forget which one it was but i't's there
skull=Cranidos(diamond only) armour=Sheildon(pearl only) dome=kabuto helix=Omanyte claw=anorith root=lilleep old amber=aerodactyl
you do not find dialga in Pokemon pearl
In the Chroma Highlands, where the Gligar are.
You may want to get an Aerodactyl in Pokémon Pearl version. To do so, you have to revive the old amber item.