An article published in the journal “Nature Ecology & Evolution” reports the discovery of two specimens of pterosaur that lived in today’s China about 165-160 million years ago, during the Jurassic period, that had filaments called pycnofibres that make up a plumage. A team of researchers studied under the microscope those pycnofibres finding four different types of feathers, concluding that they’re very similar to those of birds and those found in feathered dinosaur fossils.