The Abelisk is a Trophy Rare Game found in the Ridorana Cataract in Final Fantasy XII. It is a stronger version of the Archaeosaur. It is also fought in the Zodiac versions Trial Mode at stage 85 along with Pylraster and Terror Tyrant.
Bestiary entry: 332 Edit
Rare strain of Archaeosaur with an unusual skeletal structure. Hunted near the Ridorana Cataract.
To find the Abelisk the player must have spoken to the "Huntmaster" in Phon Coast and defeated Thalassinon, which will trigger the start of the Rare Game quest. There is then a 30% chance that Abelisk will spawn in the Echoes from Time's Garden area of the Ridorana Cataract.