Lego Jurassic World Dinosaur Fossil: T. Rex Skull, 76964, 577 PCs., Once built, the " bone" skull has a moveable jaw, "fossilized" footprint and a hidden "amber" piece for creating a unique display. Set up the dinosaur skull with the jaw up opened or closed. Place the footprint near the skull as part of the exhibit. Display the skull, amber, footprint in different ways. New in Sealed Box