Thomas N. Taylor, Department of Ecology and Evolutionary Biology and Natural History Museum and Biodiversity Institute, the University of Kansas, Lawrence, Kansas, Michael Krings, Department of Earth and Environmental Sciences, Palaeontology & Geobiology, Ludwig-Maximilians-University, and Bavarian State Collection for Palaeontology and Geology, Munich, Germany, Edith L. Taylor, Department of Ecology and Evolutionary Biology and Natural History Museum and Biodiversity Institute, the University of Kansas, Lawrence, Kansas