The Old Sea Chart is a key item given out only through events (however it can be hacked into the game) and is only available to Emerald version.
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You can't find the Old Sea Chart in FireRed.
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!
You can't without using cheatcodes. The Old Sea Chart is only obtainable and useable in Pokemon Emerald.
the fossil guy in the southern sea in the lab. the fossil turs in to a rock and flying type.
go to the house with the old lady and talk to her and you will get a cup of tea then talk to the guard