A Fossil is an item that can be found in certain caves and dug up in the Underground. Fossils can then be resurrected into the Pokémon it's a Fossil of. Each Generation has its own set of Fossils consisting of at least two stage-two evolutionary families except Generations II, VII, and IX.
| Name | Image | Pokémon | Evolution | Generation |
|---|---|---|---|---|
| Helix Fossil | 
|
 Omanyte
|
 Omastar
|
I |
| Dome Fossil | 
|
 Kabuto
|
 Kabutops
|
I |
| Old Amber | 
|
 Aerodactyl
|
None | I |
| Root Fossil | 
|
 Lileep
|
 Cradily
|
III |
| Claw Fossil | 
|
 Anorith
|
 Armaldo
|
III |
| Skull Fossil | 
|
 Cranidos
|
 Rampardos
|
IV |
| Armor Fossil | 
|
 Shieldon
|
 Bastiodon
|
IV |
| Cover Fossil | 
|
 Tirtouga
|
 Carracosta
|
V |
| Plume Fossil | 
|
 Archen
|
 Archeops
|
V |
| Jaw Fossil | 
|
 Tyrunt
|
 Tyrantrum
|
VI |
| Sail Fossil | 
|
 Amaura
|
 Aurorus
|
VI |
| Fossilized Bird | 
|
 Dracozolt (with  ) Arctozolt (with  )
|
None | VIII |
| Fossilized Fish | 
|
 Dracovish (with ) Arctovish (with )
|
None | VIII |
| Fossilized Drake |
|
Dracozolt (with ) Dracovish (with )
|
None | VIII |
| Fossilized Dino |
|
Arctozolt (with ) Arctovish (with )
|
None | VIII |
Resurrecting
In order to resurrect the Fossil into a Pokémon, the player will need to visit a building, usually a museum.
- In Pokémon Red, Blue, Yellow, FireRed and LeafGreen, and Let's Go, Pikachu! and Let's Go, Eevee!, visit the Pokémon Lab on Cinnabar Island and enter the room on the far right.
- In Pokémon Ruby, Sapphire, Emerald, Omega Ruby and Alpha Sapphire, visit the Devon Corporation in Rustboro City and have it resurrected by the scientist.
- In Pokémon Diamond, Pearl, and Platinum, visit the Oreburgh Museum in Oreburgh City.
- In Pokémon HeartGold and SoulSilver, visit the Pewter Museum in Pewter City.
- In Pokémon Black and White, visit the Nacrene Museum in Nacrene City.
- In Pokémon X and Pokémon Y, visit the Fossil Lab in Ambrette Town.
- In Pokémon Sun and Pokémon Moon and Pokémon Ultra Sun and Pokémon Ultra Moon, visit the Fossil Restoration Center on Route 8.
- In Pokémon Sword and Pokémon Shield, talk to Cara Liss on Route 6.
Trivia
- Generation I and VIII are the only Generations to have more than two Fossils.
- Generations II, VII, and IX are the only Generations without Fossils. In Gen II's case, this is likely due to the fact that Johto is geographically connected to Kanto and would likely have the same Fossils as Kanto, in Gen VII's case, it's likely due to the fact that Hawaii, Alola's inspiration, is relatively geologically young, and in Gen IX's case, it may be because of Paldea having Paradox Pokémon (ancestors or descendants of modern Pokémon) instead.
- Cranidos and Rampardos are the only Fossils that are pure Rock type.
- Tirtouga and Carracosta are the only Fossils with Rock as a secondary type.
- Generation VIII's Fossils are the only Fossils that aren't part Rock type.