You can only Dino Slash this Dinosaur by placing it on top of a Shantungosaurus.
When this Dinosaur wins a battle, you can Dino Slash a Dinosaur from your discard pile.
Foolscap triggered this form for Shantungosaurus when Pteranodon had snatched Sanzo Hoshi off its back, using Green Impulse to summon Tupuxuara to get him back. Shantungosaurus knocked Paris down, defeating her and forcing the Pteranodon back to their card, but then DinoTectorChomp was summoned to fight. Sanzo tried convincing the two not fight, knowing Shantungosaurus to be kind at heart, but Rex knocked him aside when Foolscap dived for him. Foolscap told Shantungosaurus to attack, but it knocked him away instead, letting Chomp defeat Shantungosaurus with Plasma Anchor, destroying its Spectral Armor and returning Tupuxuara to its card. Max reclaimed its original card and Green Impulse (which was later passed to Zoe).