Pycnofibre

While the metal frames, styrofoam bulk and resin wings comprised the majority of the models, the details that would bring them to life – eyes, scars, pycnofibres, scales and colour – needed to be added before the models could really look vital.

Many [pterosaurs] had furry coats made up of hair-like filaments known as pycnofibres, which covered their bodies and parts of their wings.