You get the Old Amber from Celedon City but you need to go to cinnibar island and revive the fossil.

Aerodactyl #142

Aerodactyl

FOUND:RED & BLUE
CAUGHT:RED & BLUE

FOUND:Celedon City

LEVEL ATTACK TYPE

-

 Wing Attack FLY

-

 Agility PSY

33

 Supersonic NRM

38

 Bite NRM

45

 Tale Down NRM

54

 Hyper Beam NRM
CAPABLE WITH
TM:02,04,06,09,10,15,20,23,31,32,
33,34,38,39,43,44,50
HM:02

TYPE:ROCK & FLYING

AERODACTYL