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, Magnezone, Metagross, and Kyogre. It is also recommended to open with an Electric-type Pokemon to deal with Aerodactyl and Slowking, if thats what you get. Additionally, you should make sure to have a strong Steel-type Pokemon like Metagross on your team, which can take down Aerodactyl as well as other potential Pokemon in Cliffs lineup. Other recommended Pokemon to use against Aerodactyl include Lucario, Rampardos, and Raikou.