LEGO DREAMZzz Dinosaur Jet 71514. The Brontosaurus is a large dinosaur formed from molten rock with a forked tail and detachable spaceship. The Stegosaurus is an armoured battle creature with a flaming mace tail and comes with a spaceship model. The set also includes 4 LEGO minifigures with toy swords, 3 spiders, a diamond egg and 2 Treasure Creatures, one orange and one blue. The Brontosaurus figure measures approximately 23 cm high, 44 cm wide and 14 cm deep.