1148. T-Rex and Spinosaur mechanical studies from Jurassic Park III and T-Rex mechanical leg study from The Lost World: Jurassic Park. (Universal, 1997) In planning the on-set placement and interactions of the full-sized hydraulic dinosaurs, miniature scale versions of the character, its carriage, tracks, and associate parts were needed. These T-Rex and Spinosaur mechanical models are constructed of plastic, steel, and aluminum. Also included is the mechanical leg study for the T-Rex in The Lost World: Jurassic Park, also constructed of plastic, steel, and aluminum. $3,000 - $5,000