Zuru Dinosaur Fossil Mysterious Egg Set. Open the egg to find a set of stones, each containing a dinosaur model piece. Break the rocks using the excavation tool and then snap the pieces together to create an interactive model. Pull its tail and the eyes light up as the beast lets out a formidable roar. Each pack also includes dinosaur slime bags. Designs include a T-Rex, Triceratops, Ankylosaurus and Stegosaurus, supplied in a blind box.