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"Fossil Fusion".

  • せき
  • 化石 (base)
  • かせき (ruby)
  • Kaseki (romanized)


Anime appearances

"Fossil" (せき Kaseki) is an anime-only archetype consisting of EARTH-Attribute, Rock-Type Fusion Monsters used by Jim Crocodile Cook in the Yu-Gi-Oh! GX anime. They focus on a unique form of Fusion Summoning with "Fossil Fusion". In the anime, they are created by removing a Rock-Type monster in your Graveyard and another Type of monster from your opponent's Graveyard. Though never released in the TCG and OCG, they are playable in the Tag Force games, where they are created by removing a Rock-Type monster in your Graveyard and a monster of certain Level in your opponents. "Fossil Fusion" supports the archetype, which results in several other cards that have been released being part of this archetype.

In the Japanese version, the "Fossil" Fusion Monsters have power corresponding to their age. The older the monster, the more powerful it is. Name-wise, they have prehistoric eras in their names, which were removed in the dub and English video games.


Monster Era Origin
Fossil Dragon Skullgar Cenozoic
Fossil Dragon Skullgios Paleozoic Tyrannosaurus
Fossil Machine Skull Buggy Cenozoic Dune buggy
Fossil Machine Skull Convoy Paleozoic Convoy
Fossil Machine Skull Wagon Mesozoic Station wagon
Fossil Warrior Skull Bone Cenozoic Pawn
Fossil Warrior Skull King Paleozoic King
Fossil Warrior Skull Knight Mesozoic Knight

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