In Star Wars: Episódio IV - Uma Nova Esperança, O C-3PO passa pelo que parece um esqueleto de dinossauro:
O que é essa criatura? Eles estão extintos? Como um animal tão grande conseguiu sobreviver em um deserto árido?
É de um dragão da Grande Krayt: http://starwars.wikia.com/wiki/Krayt_dragon
The krayt dragon was a large carnivorous reptile native to Tatooine.
Eles estão extintos, Obi-Wan imitou o grito de caça de um dragão Krayt para espantar o povo da areia.
The greater krayt was a rarer, larger species of krayt dragon, known for its tremendous size and continual growth over time. Creatures of near legendary status, greater krayt dragons had ten legs, measured at least 100 meters from snout to tail tip and had the ability to move through or on Tatooine's desert sand
The artificial skeleton used for A New Hope was left in the Tunisian desert after filming and still lies there. During filming of Attack of the Clones, the site was visited by the crew and the skeleton was still found there.