Schulp , A.S., Bleeker , R.W., Haarhuis , A., van Spronsen , E., During , M.A.D., Goris , G., Kaskes , P., Matteman , Y., Winkelhorst , W. and Winkelhorst , H. 2017. A tetrapod swimming traceway from the Triassic of Winterswijk, the Netherlands. Netherlands Journal of Geosciences. 96, (Aug. 2017), 273-277. DOI:https://doi.org/10.1017/njg.2017.13.