The Ruins of Alph.
Get a old amber and take it to a guy in the museum in Petwer City,
In SoulSilver and HeartGold you go to the Ruins of Alph and use rock smash until you get Old Amber.
You snash rocks to find old anber.
take it to pewter city and go to the building at the top of the town . A man at the far right of the building will turn it into the Pokemon aerodactyl
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.
the old amber reveals aridactul
In ruins of alph use rock smash on rocks and youll find an old amber go to pewter museum (kanto) a guy there extracts a Pokemon out and its aerodactyl lvl 20
Aerodactyl
Pokemon Heartgold and Soulsilver are the remakes of the old Pokemon Gold, Silver, and Crystal series. Pokemon Heartgold and Soulsilver are for the Nintendo DS.
An old amber is the fossil if you like for aerodactyl.
Because it old
The old amber is the fossil of aerodactel go to cinnibar island to ressurect him/her