In 2008, researchers discovered microscopic structures, called melanosomes, within fossilized feathers of an ancient bird. Different kinds of melanosomes create different colors in the feathers. Following this discovery in 2010, two teams of researchers reported finding melanosomes preserved in feathers of two, small, Chinese, non-avian dinosaurs—Sinosauropteryx and Anchiornis. A comprehensive study of Anchiornis revealed that this 155-million-year-old, feathered dinosaur, about the size of a chicken, possessed black-and-white stripped wings and a rusty brown crest of feathers along the top and back of its skull.