The Claw Fossil (Japanese: ツメのカセキClaw Fossil) is a Fossil introduced in Generation III that can be regenerated into Anorith. It is the counterpart of the Root Fossil.
From Generation IV onward, the Claw Fossil is no longer a Key Item, and is a normal item. Therefore, multiples of them can be obtained, they can be held, and sent to other players via trading.
The Claw Fossil was introduced as a Trainer card in the Pokémon Trading Card Game in the EX Sandstorm expansion, first released in the Japanese Miracle of the Desert expansion. Although it is a Trainer card, it is played as if it were a Colorless-type Basic Pokémon. However, the Claw Fossil can't be affected by any Special Conditions, nor can it retreat, and the player may choose to discard it at any time during their turn. Additionally, if it is in the Active Spot and is damaged by an opponent's attack, it lets the player put one damage counter on the Attacking Pokémon. It can evolve into Anorith that evolve from a Claw Fossil. During the EX Series, Knocking Out a Claw Fossil was not rewarded with a Prize card (it still had to be discarded). This changed in the Diamond & Pearl Series with its reprint in the Legends Awakened expansion, to match the Fossil cards released in the previous expansion.
During the XY Series, the Steam Siege expansion included the Item cardClaw Fossil Anorith. It allows players to look at the bottom seven cards of their deck, reveal an Anorith they find there, and put it onto their Bench. The other six cards are then shuffled back into the deck.
Claw Fossils are also featured on Unidentified Fossil cards. These cards are played as if they were Basic Pokémon and can evolve into Anorith.