Can Antique Old Amber evolve into the old Aerodactyl ex since it says "evolves into Aerodactly ex" on the card?
No, it cannot. You need to look at the "evolves from" info on the Evolution Pokemon. Aerodactyl ex from Sandstorm evolves from Mysterious Fossil, so it cannot evolve from Antique Old Amber.
Source: TPCi Rules Team (2023-11-09)

Relevant cards

Note: All applicable cards may not be listed below.
SV35_154
SV35_154
EX2_94