Data from: Chameleon-like reptiles illuminate the arboreal origin of pterosaurs

<p>Files 1-3: RTI interactive photographs of the skulls of the drepanosauromorphs <em>Megalancosaurus preonensis</em> Calzavara, Muscio and Wild, 1980 and <em>Vallesaurus cenensis</em> Renesto and Binelli, 2006 (Norian, Italy).</p> <p>Reflectance Transformation Imaging (RTI) is a method that computes an &#39;interactive specimen&#39; on which the illumination can be oriented at will. Sets of 54 photographs under different LED sources were compiled using the RTIBuilder software. The RTI files can be opened using the RTI vewer software (both softwares are freely available at www.culturalheritageimaging.org).</p> <p>Files 4-6: Nexus files of phylogenetic taxon-character matrices and backbone constraints used in phylogenetic analyses.</p> <p>Currently only available upon request for reviewers, but will be made public after acceptance of article for publication.</p>