In the Pewter Museum of Science in a backroom there is a scientist who gives it to you though you will need the HM Cut as there is a tree blocking the path.
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 take the Old Amber to Cinnabar Island and give it to the scientists. They do research on on extinct Pokemon and bring them back to life, you will receive Aerodactyl.
in eterna city
the old amber reveals aridactul
Go underground, keep looking and SURELY you'll find it.
you take it to the fossil guy in cinnabar and he brings it back to life..... when you get the Pokemon back it is areyaldactl-- (don't know hw to spell lol)
Aerodactyl
An old amber is the fossil if you like for aerodactyl.
Get a old amber and take it to a guy in the museum in Petwer City,
You need to go in the underground and find an Old amber or trade it with someone.
Because it old
The old amber is the fossil of aerodactel go to cinnibar island to ressurect him/her