To beat Cliffs Aerodactyl in Pokemon Go, you should use Pokemon with Electric, Ice, Rock, Steel, or Water-type moves, as Aerodactyl is weak against these types. Some of the best counters for Aerodactyl include Raikou with Thunder Shock and Wild Charge, Magnezone with Charge Beam and Zap Cannon, and Metagross with Bullet Punch and Meteor Mash. Tyranitar is also a good choice, as it is a superior Dark and Rock-type that can help defeat Slowking and Aerodactyl to an extent. Lucario with Counter and Power-Up Punch/Flash Cannon is another great choice, as Power-Up Punch will burn the shields effectively, and Flash Cannon will do some damage once they are down. Swampert with Mud Shot/Hydro Cannon is also a good option, as it can fire off two charged fast moves as fast as possible. A reliable team to beat Cliffs Aerodactyl includes Lucario, Tyranitar, and Magnezone.