Fossils

Fossils are items that can be revived into a recruitable Pokémon in the Red Moon Spring, the Secret Room found in Loch Lenile Cavern. The Pokémon revived depends on the fossil used. Fossils are mainly found in Tanren Chambers or hidden in dungeon floors.

Special Fossils
These items can also be used to summon recruitable Pokémon but are not typical fossils.

Worn Doll
The Worn Doll is obtainable from an end box in Tanren Graveyard. It can be used to revive Mimikyu when used in Tanren Graveyard's Secret Room.

Odd Keystone
The Odd Keystone is occasionally dropped by enemy Spiritomb in Tanren Basement. It can be used to revive Spiritomb when used in Tanren Courtyard's Secret Room when it is night.