Card Appearances:Sauropod Brachion
- In episode 110, Tyranno Hassleberry uses this card during his duel against Jim Crocodile Cook. He summons this card with no Tributes via the effect of "Big Evolution Pill". Hassleberry then activates "Tail Swipe" to return "Sample Fossil" and "Sabersaurus" to their owners' hands. This card then attacks directly. After Jim summons "Fossil Dragon Skullgios" via "Fossil Fusion", this card's effect activates, switching this card to Defense Position. "Skullgeoth" then attacks this card. Jim then activates the first effect of "Skullgeoth" to swap this card's ATK and DEF. "Skullgeoth" then destroys this card and inflicts piercing damage to Hassleberry, winning Jim the Duel.