An ostrich eggshell necklace was also found around his neck. The cuticle forms the final, outer layer of the eggshell. Every part of an egg is edible, although the eggshell is generally discarded. Sub-centimeter fragments of pebbly-textured hadrosaur eggshell have been reported from the Dinosaur Park Formation. Together with the calcium carbonate eggshell and protein-rich membrane are useless. The outer surface of moa eggshell is characterised by small, slit-shaped pores. The color "eggshell" is a representation of the average color of chicken eggs. Breeding pens, perches, bones, and eggshell fragments have been uncovered. Evidence of endolithic fungi were discovered within dinosaur eggshell found in central China. Sanna sleeps in a large dinosaur eggshell. Less frequently, the concave underside of the eggshell fragment will preserve bumps known as mammillae. A honed finish provides a smooth, satin-like ("eggshell"), nonreflective surface. In contrast with eggshell fossils, the remains of very young hadrosaurs are somewhat common. Finally, the wax preventing the dye to adhere to the eggshell is removed. Light microscopy can be used to magnify the structure of dinosaur eggshell for scientific research.