1. 2Department of Biological Sciences, LSCB 124, University of South Alabama, Mobile, Alabama 36688 USA;
2. 3Abt. Paläobotanik am Geologisch‐Paläontologischen Institut, Westfälische Wilhelms‐Universität Münster, Hindenburgplatz 57, D‐48143 Münster, Germany Germany
3. 4Department of Ecology and Evolutionary Biology and Natural History Museum and Biodiversity Research Center, University of Kansas, Lawrence, Kansas 66045 USA