One hundred and eighty-million-year-old pigment cells (melanophores). To the left, light micrograph of the branched melanophores. In the centre, synchrotron-radiation X-ray tomographic microscopy (SRXTM) rendering of a melanophore with long dendritic processes. To the right, transmission electron microscopy (TEM) image of a melanophore that contains melanosome organelles. Courtesy of Johan Lindgren (left image), Mats E. Eriksson and Federica Marone (centre images), and Ola Gustafsson (right image).