We thank H.-J. Siber and Y. Siber from the Saurier-Museum Aathal for giving us access to their collections and especially to allow us to use some of the material for the tomographies. We are furthermore indebted to G. Ralli (DMR) for processing the X-ray computed tomographies and R. Schumacher (FHBB) for helping us with data processing. Thanks also to J. Habersetzer for helpful discussions of our results and interpretations and hints. We are also grateful to the two anonymous reviewers, who gave valuable hints and suggestions for the improvement of the manuscript and the application of neutron tomography to vertebrate palaeontology. We are especially grateful to the executive editors of PE, P.D. Polly and J.W. Hagadorn, for their support and help with this manuscript. Financial support for D. Schwarz is provided by the Swiss National Science Foundation (SNF No. 200021-101494/1).